Index: INSTALL.oracle.txt
===================================================================
RCS file: INSTALL.oracle.txt
diff -N INSTALL.oracle.txt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ INSTALL.oracle.txt	3 Apr 2008 07:55:00 -0000
@@ -0,0 +1,71 @@
+// $Id: INSTALL.oracle.txt,v 1.1 2007/12/09 17:45:21 hswong3i Exp $
+
+CREATE THE Oracle DATABASE
+--------------------------
+
+This file describes how to create a Oracle database for Drupal.
+
+If you control your databases through a web-based control panel,
+check its documentation, as the following instructions are for the
+command line only.
+
+This step is only necessary if you don't already have a database
+set-up (e.g. by your host). In the following examples, 'dba_user' is
+an example Oracle user which has the CREATE and GRANT privileges. Use
+the appropriate user name for your system.
+
+Optionally, you can create a new tablespace for your Drupal site
+datebase. Log into sqlplus by following command:
+
+  sqlplus dba_user
+
+sqlplus will prompt for the 'dba_user' database password. At the
+sqlplus prompt, enter following command:
+
+  CREATE TABLESPACE tablespace_name
+  DATAFILE 'file_directory_path'
+  SIZE filesize AUTOEXTEND ON NEXT extend_size;
+
+where
+
+  'tablespace_name' is the name of you new tablespace
+  'file_directory_path' is the file location in database server
+  'filesize' is the initial file size, e.g. 50K, 1000M.
+  'extend_size' is the volumn for extension when data file is full
+
+First, you must create a new user for your Drupal site. At the
+sqlplus prompt, enter the following command:
+
+  CREATE USER username
+  IDENTIFIED BY "password";
+  DEFAULT TABLESPACE tablespace_name;
+  GRANT CONNECT, RESOURCE TO username;
+
+where
+
+  'tablespace_name' is the name of you tablespace
+  'username' is the username of your Oracle account
+  'password' is the password required for that username
+
+   Note: Unless your database user has all of the privileges listed
+   above, you will not be able to run Drupal.
+
+Oracle SPECIAL REQUIREMENTS
+---------------------------
+
+1. SYSTEM REQUIREMENT
+
+   Oracle driver for Drupal is fully tested with below softwares:
+     Oracle Database 10g Release 2 (10.2.0.1.0) for Linux x86,
+     Zend Core for Oracle v.2 Linux x86,
+     Zend Framework 1.0.0,
+     PHP Version 5.2.3,
+     Apache 2.2.3 (Debian)
+
+   You may use something newer than above, but there is no guarantee for
+   backward compatible.
+
+2. TABLE PREFIX LIMITATION
+
+   Table prefix are limited in maximum 12 characters. Proved by testing, it
+   is suggested to use table prefix within 10 characters.
Index: INSTALL.pgsql.txt
===================================================================
RCS file: INSTALL.pgsql.txt
diff -N INSTALL.pgsql.txt
--- INSTALL.pgsql.txt	26 Nov 2007 16:36:42 -0000	1.7
+++ /dev/null	1 Jan 1970 00:00:00 -0000
@@ -1,28 +0,0 @@
-// $Id: INSTALL.pgsql.txt,v 1.7 2007/11/26 16:36:42 dries Exp $
-
-CREATE THE PostgreSQL DATABASE
-------------------------------
-
-Note that the database must be created with UTF-8 (Unicode) encoding.
-
-1. CREATE DATABASE USER
-
-   This step is only necessary if you don't already have a user set up (e.g.
-   by your host) or you want to create new user for use with Drupal only. The
-   following command creates a new user named "username" and asks for a
-   password for that user:
-
-     createuser --pwprompt --encrypted --no-adduser --no-createdb username
-
-   If everything works correctly, you'll see a "CREATE USER" notice.
-
-2. CREATE THE DRUPAL DATABASE
-
-   This step is only necessary if you don't already have a database set up (e.g.
-   by your host) or you want to create new database for use with Drupal only.
-   The following command creates a new database named "databasename", which is
-   owned by previously created "username":
-
-     createdb --encoding=UNICODE --owner=username databasename
-
-   If everything works correctly, you'll see a "CREATE DATABASE" notice.
Index: INSTALL.postgresql.txt
===================================================================
RCS file: INSTALL.postgresql.txt
diff -N INSTALL.postgresql.txt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ INSTALL.postgresql.txt	3 Apr 2008 07:55:00 -0000
@@ -0,0 +1,28 @@
+// $Id: INSTALL.postgresql.txt,v 1.1 2007/12/09 17:45:21 hswong3i Exp $
+
+CREATE THE PostgreSQL DATABASE
+------------------------------
+
+Note that the database must be created with UTF-8 (Unicode) encoding.
+
+1. CREATE DATABASE USER
+
+   This step is only necessary if you don't already have a user set up (e.g.
+   by your host) or you want to create new user for use with Drupal only. The
+   following command creates a new user named "username" and asks for a
+   password for that user:
+
+     createuser --pwprompt --encrypted --no-adduser --no-createdb username
+
+   If everything works correctly, you'll see a "CREATE USER" notice.
+
+2. CREATE THE DRUPAL DATABASE
+
+   This step is only necessary if you don't already have a database set up (e.g.
+   by your host) or you want to create new database for use with Drupal only.
+   The following command creates a new database named "databasename", which is
+   owned by previously created "username":
+
+     createdb --encoding=UNICODE --owner=username databasename
+
+   If everything works correctly, you'll see a "CREATE DATABASE" notice.
Index: INSTALL.txt
===================================================================
RCS file: /cvs/drupal/drupal/INSTALL.txt,v
retrieving revision 1.61.2.2
diff -u -p -r1.61.2.2 INSTALL.txt
--- INSTALL.txt	7 Feb 2008 20:46:56 -0000	1.61.2.2
+++ INSTALL.txt	3 Apr 2008 07:55:00 -0000
@@ -182,7 +182,7 @@ INSTALLATION
    unexpected problems on an existing site. If you modify the file system path
    on an existing site, remember to copy all files from the original location
    to the new location.
-   
+
    Some administrators suggest making the documentation files, especially
    CHANGELOG.txt, non-readable so that the exact version of Drupal you are
    running is slightly more difficult to determine. If you wish to implement
Index: MAINTAINERS.siren.txt
===================================================================
RCS file: MAINTAINERS.siren.txt
diff -N MAINTAINERS.siren.txt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ MAINTAINERS.siren.txt	3 Apr 2008 07:55:00 -0000
@@ -0,0 +1,24 @@
+// $Id$
+
+List of maintainers
+--------------------------------------------------------------------------------
+
+LEGEND
+======
+
+- M: the maintainer
+- S: status:
+      "supported"     : someone is actually paid to look after this.
+      "maintained"    : someone actually looks after it.
+      "fixes/patches" : it has a maintainer but they don't have time to
+                        do much other than throw the odd patch in.
+      "orphan"        : no current maintainer, but maybe you could take
+                        the role as you write new code?
+- W: website with status or information
+
+--------------------------------------------------------------------------------
+
+Siren
+M: Edison Wong <hswong3i@gmail.com>
+S: maintained
+W: http://edin.no-ip.com/project/siren/
Index: README.siren.txt
===================================================================
RCS file: README.siren.txt
diff -N README.siren.txt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ README.siren.txt	3 Apr 2008 07:55:00 -0000
@@ -0,0 +1,60 @@
+// $Id$
+
+WHAT IS SIREN?
+--------------
+
+This is my personal project besides Drupal, which try to research the
+possibility of other database supporting for Drupal, e.g. Oracle, IBM DB2,
+MSSQL, SQLite, etc; on the other hand, I will provide unofficial database
+supporting during Drupal-6.x life cycle, and further more contribute the
+research progress for Drupal-7.x.
+
+For more information on Siren visit
+the Siren project homepage at http://edin.no-ip.com/project/siren/
+
+CURRENT RESEARCH PROGRESS
+-------------------------
+
+Besides official Drupal-6.x mysql, mysqli and pgsql, Siren also provide
+pdo_mysql, pdo_pgsql and oci8 database driver supporting. According to the
+needs of PDO and Oracle drivers implementation, ALL core queries and some
+APIs are hacked for compatibility concern.
+
+3rd PARTY MODULE HACK HOWTO
+---------------------------
+
+Based on cross database compatibility concern, Siren come with lots of core
+queries hack. Most works are done for you, and it should run across
+MySQl/PgSQL/Oracle without any critical problem.
+
+Anyway, you will also need to apply some 3rd party module. So how to let them
+work together with this unofficial core?
+
+1. ENCLOSE ALL TABLE/COLUMN/CONSTRAINT NAME WITH []
+
+   Go though you target module, and enclose all table/column/constraint name
+   with [] syntax, which similar as {} syntax for all table.
+
+   This can be helped by using VI + regex: /{[A-Za-z0-9_]*}
+
+2. REPLACE ALL '%s' SYNTAX WITH %s
+
+   This is very important for unofficial PDO supporting.
+
+   This can be helped by using VI + regex: :%s/'%s'/%s/gc
+
+3. REMOVE ANY %% SYNTAX
+
+   PDO don't allow inline % syntax when using with ? placeholder.
+
+   This can be helped by using VI + regex: /%%
+
+4. UTILIZE ALL DB_* ABSTRACTION IF POSSIBLE
+
+   These abstraction are mainly duel with syntax different among different DB.
+
+5. USE %s EVEN IT IS AN EMPTY STRING
+
+   Using empty string as placeholder will cause problem among Oracle and
+   MSSQL. Escape it by using %s. Oracle and MSSQL driver will able to catch
+   them and replace it as required empty string placeholder internally.
Index: UPGRADE.siren.txt
===================================================================
RCS file: UPGRADE.siren.txt
diff -N UPGRADE.siren.txt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ UPGRADE.siren.txt	3 Apr 2008 07:55:00 -0000
@@ -0,0 +1,12 @@
+// $Id$
+
+UPGRADING FOR SIREN
+-------------------
+
+As a flash new research project, Siren 1.x remove the direct upgrade handling
+from Drupal 5.x. You should always use Siren for flash install.
+
+On the other hand, you may first upgrade your site from Drupal 5.x to
+Drupal 6.x, and handle the convert from Drupal 6.x to Siren 1.x manually.
+There is no guarantee about this handling, and please backup and do this with
+your own risk.
Index: install.php
===================================================================
RCS file: /cvs/drupal/drupal/install.php,v
retrieving revision 1.113.2.2
diff -u -p -r1.113.2.2 install.php
--- install.php	8 Feb 2008 22:00:45 -0000	1.113.2.2
+++ install.php	3 Apr 2008 07:55:00 -0000
@@ -136,7 +136,7 @@ function install_main() {
  */
 function install_verify_drupal() {
   // Read the variable manually using the @ so we don't trigger an error if it fails.
-  $result = @db_query("SELECT value FROM {variable} WHERE name = '%s'", 'install_task');
+  $result = @db_query("SELECT [value] FROM [{variable}] WHERE [name] = %s", 'install_task');
   if ($result) {
     return unserialize(db_result($result));
   }
@@ -153,16 +153,16 @@ function install_verify_settings() {
     // We need this because we want to run form_get_errors.
     include_once './includes/form.inc';
 
-    $url = parse_url(is_array($db_url) ? $db_url['default'] : $db_url);
-    $db_user = urldecode($url['user']);
-    $db_pass = isset($url['pass']) ? urldecode($url['pass']) : NULL;
-    $db_host = urldecode($url['host']);
-    $db_port = isset($url['port']) ? urldecode($url['port']) : '';
-    $db_path = ltrim(urldecode($url['path']), '/');
+    $url = isset($db_url['default']) ? $db_url['default'] : $db_url;
+    $db_user = $url['db_user'];
+    $db_pass = isset($url['db_pass']) ? $url['db_pass'] : NULL;
+    $db_host = $url['db_host'];
+    $db_port = isset($url['db_port']) ? $url['db_port'] : '';
+    $db_name = $url['db_name'];
     $settings_file = './'. conf_path(FALSE, TRUE) .'/settings.php';
 
     $form_state = array();
-    _install_settings_form_validate($db_prefix, $db_type, $db_user, $db_pass, $db_host, $db_port, $db_path, $settings_file, $form_state);
+    _install_settings_form_validate($db_prefix, $db_type, $db_user, $db_pass, $db_host, $db_port, $db_name, $settings_file, $form_state);
     if (!form_get_errors()) {
       return TRUE;
     }
@@ -176,12 +176,12 @@ function install_verify_settings() {
 function install_change_settings($profile = 'default', $install_locale = '') {
   global $db_url, $db_type, $db_prefix;
 
-  $url = parse_url(is_array($db_url) ? $db_url['default'] : $db_url);
-  $db_user = isset($url['user']) ? urldecode($url['user']) : '';
-  $db_pass = isset($url['pass']) ? urldecode($url['pass']) : '';
-  $db_host = isset($url['host']) ? urldecode($url['host']) : '';
-  $db_port = isset($url['port']) ? urldecode($url['port']) : '';
-  $db_path = ltrim(urldecode($url['path']), '/');
+  $url = isset($db_url['default']) ? $db_url['default'] : $db_url;
+  $db_user = isset($url['db_user']) ? $url['db_user'] : '';
+  $db_pass = isset($url['db_pass']) ? $url['db_pass'] : '';
+  $db_host = isset($url['db_host']) ? $url['db_host'] : '';
+  $db_port = isset($url['db_port']) ? $url['db_port'] : '';
+  $db_name = $url['db_name'];
   $conf_path = './'. conf_path(FALSE, TRUE);
   $settings_file = $conf_path .'/settings.php';
 
@@ -189,15 +189,15 @@ function install_change_settings($profil
   include_once './includes/form.inc';
   install_task_list('database');
 
-  if ($db_url == 'mysql://username:password@localhost/databasename') {
-    $db_user = $db_pass = $db_path = '';
+  if ($db_url == array()) {
+    $db_user = $db_pass = $db_name = '';
   }
   elseif (!empty($db_url)) {
     // Do not install over a configured settings.php.
     install_already_done_error();
   }
 
-  $output = drupal_get_form('install_settings_form', $profile, $install_locale, $settings_file, $db_url, $db_type, $db_prefix, $db_user, $db_pass, $db_host, $db_port, $db_path);
+  $output = drupal_get_form('install_settings_form', $profile, $install_locale, $settings_file, $db_url, $db_type, $db_prefix, $db_user, $db_pass, $db_host, $db_port, $db_name);
   drupal_set_title(st('Database configuration'));
   print theme('install_page', $output);
   exit;
@@ -207,7 +207,7 @@ function install_change_settings($profil
 /**
  * Form API array definition for install_settings.
  */
-function install_settings_form(&$form_state, $profile, $install_locale, $settings_file, $db_url, $db_type, $db_prefix, $db_user, $db_pass, $db_host, $db_port, $db_path) {
+function install_settings_form(&$form_state, $profile, $install_locale, $settings_file, $db_url, $db_type, $db_prefix, $db_user, $db_pass, $db_host, $db_port, $db_name) {
   if (empty($db_host)) {
     $db_host = 'localhost';
   }
@@ -217,6 +217,15 @@ function install_settings_form(&$form_st
   if (isset($db_types['mysqli'])) {
     unset($db_types['mysql']);
   }
+  // If both 'mysqli' and 'pdo_mysql' are available, we disable 'mysqli':
+  if (isset($db_types['pdo_mysql'])) {
+    unset($db_types['mysqli']);
+  }
+
+  // If both 'pgsql' and 'pdo_pgsql' are available, we disable 'pgsql':
+  if (isset($db_types['pdo_pgsql'])) {
+    unset($db_types['pgsql']);
+  }
 
   if (count($db_types) == 0) {
     $form['no_db_types'] = array(
@@ -239,7 +248,7 @@ function install_settings_form(&$form_st
         '#default_value' => ($db_type ? $db_type : current($db_types)),
         '#description' => st('The type of database your @drupal data will be stored in.', array('@drupal' => drupal_install_profile_name())),
       );
-      $db_path_description = st('The name of the database your @drupal data will be stored in. It must exist on your server before @drupal can be installed.', array('@drupal' => drupal_install_profile_name()));
+      $db_name_description = st('The name of the database your @drupal data will be stored in. It must exist on your server before @drupal can be installed.', array('@drupal' => drupal_install_profile_name()));
     }
     else {
       if (count($db_types) == 1) {
@@ -248,19 +257,19 @@ function install_settings_form(&$form_st
           '#type' => 'hidden',
           '#value' => $db_types[0],
         );
-        $db_path_description = st('The name of the %db_type database your @drupal data will be stored in. It must exist on your server before @drupal can be installed.', array('%db_type' => $db_types[0], '@drupal' => drupal_install_profile_name()));
+        $db_name_description = st('The name of the %db_type database your @drupal data will be stored in. It must exist on your server before @drupal can be installed.', array('%db_type' => $db_types[0], '@drupal' => drupal_install_profile_name()));
       }
     }
 
     // Database name
-    $form['basic_options']['db_path'] = array(
+    $form['basic_options']['db_name'] = array(
       '#type' => 'textfield',
       '#title' => st('Database name'),
-      '#default_value' => $db_path,
+      '#default_value' => $db_name,
       '#size' => 45,
       '#maxlength' => 45,
       '#required' => TRUE,
-      '#description' => $db_path_description
+      '#description' => $db_name_description
     );
 
     // Database username
@@ -341,13 +350,13 @@ function install_settings_form(&$form_st
  */
 function install_settings_form_validate($form, &$form_state) {
   global $db_url;
-  _install_settings_form_validate($form_state['values']['db_prefix'], $form_state['values']['db_type'], $form_state['values']['db_user'], $form_state['values']['db_pass'], $form_state['values']['db_host'], $form_state['values']['db_port'], $form_state['values']['db_path'], $form_state['values']['settings_file'], $form_state, $form);
+  _install_settings_form_validate($form_state['values']['db_prefix'], $form_state['values']['db_type'], $form_state['values']['db_user'], $form_state['values']['db_pass'], $form_state['values']['db_host'], $form_state['values']['db_port'], $form_state['values']['db_name'], $form_state['values']['settings_file'], $form_state, $form);
 }
 
 /**
  * Helper function for install_settings_validate.
  */
-function _install_settings_form_validate($db_prefix, $db_type, $db_user, $db_pass, $db_host, $db_port, $db_path, $settings_file, &$form_state, $form = NULL) {
+function _install_settings_form_validate($db_prefix, $db_type, $db_user, $db_pass, $db_host, $db_port, $db_name, $settings_file, &$form_state, $form = NULL) {
   global $db_url;
 
   // Verify the table prefix
@@ -361,8 +370,7 @@ function _install_settings_form_validate
 
   // Check database type
   if (!isset($form)) {
-    $_db_url = is_array($db_url) ? $db_url['default'] : $db_url;
-    $db_type = substr($_db_url, 0, strpos($_db_url, '://'));
+    $db_type = $db_url['db_type'];
   }
   $databases = drupal_detect_database_types();
   if (!in_array($db_type, $databases)) {
@@ -370,7 +378,15 @@ function _install_settings_form_validate
   }
   else {
     // Verify
-    $db_url = $db_type .'://'. urlencode($db_user) . ($db_pass ? ':'. urlencode($db_pass) : '') .'@'. ($db_host ? urlencode($db_host) : 'localhost') . ($db_port ? ":$db_port" : '') .'/'. urlencode($db_path);
+    $db_url = array(
+      'db_host' => $db_host ? $db_host : 'localhost',
+      'db_port' => $db_port ? $db_port : '',
+      'db_name' => $db_name,
+      'db_user' => $db_user,
+      'db_pass' => $db_pass ? $db_pass : '',
+      'db_type' => $db_type,
+      'db_prefix' => $db_prefix,
+    );
     if (isset($form)) {
       form_set_value($form['_db_url'], $db_url, $form_state);
     }
@@ -399,10 +415,6 @@ function install_settings_form_submit($f
     'value'    => $form_state['values']['_db_url'],
     'required' => TRUE,
   );
-  $settings['db_prefix'] = array(
-    'value'    => $form_state['values']['db_prefix'],
-    'required' => TRUE,
-  );
   drupal_rewrite_settings($settings);
 
   // Continue to install profile step
@@ -916,7 +928,7 @@ function install_check_requirements($pro
         drupal_set_message($message, 'warning');
       }
     }
-  } 
+  }
 }
 
 /**
Index: update.php
===================================================================
RCS file: /cvs/drupal/drupal/update.php,v
retrieving revision 1.252
diff -u -p -r1.252 update.php
--- update.php	3 Feb 2008 18:41:16 -0000	1.252
+++ update.php	3 Apr 2008 07:55:00 -0000
@@ -55,26 +55,26 @@ function db_add_column(&$ret, $table, $c
   if (array_key_exists('default', $attributes)) {
     if (is_null($attributes['default'])) {
       $default_val = 'NULL';
-      $default = 'default NULL';
+      $default = 'DEFAULT NULL';
     }
     elseif ($attributes['default'] === FALSE) {
       $default = '';
     }
     else {
-      $default_val = "$attributes[default]";
-      $default = "default $attributes[default]";
+      $default_val = $attributes['default'];
+      $default = "DEFAULT ". $attributes['default'];
     }
   }
 
-  $ret[] = update_sql("ALTER TABLE {". $table ."} ADD $column $type");
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] ADD [$column] $type");
   if (!empty($default)) {
-    $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $column SET $default");
+    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$column] SET $default");
   }
   if (!empty($not_null)) {
     if (!empty($default)) {
-      $ret[] = update_sql("UPDATE {". $table ."} SET $column = $default_val");
+      $ret[] = update_sql("UPDATE [{". $table ."}] SET [$column] = $default_val");
     }
-    $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $column SET NOT NULL");
+    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$column] SET NOT NULL");
   }
 }
 
@@ -111,23 +111,23 @@ function db_change_column(&$ret, $table,
   if (array_key_exists('default', $attributes)) {
     if (is_null($attributes['default'])) {
       $default_val = 'NULL';
-      $default = 'default NULL';
+      $default = 'DEFAULT NULL';
     }
     elseif ($attributes['default'] === FALSE) {
       $default = '';
     }
     else {
-      $default_val = "$attributes[default]";
-      $default = "default $attributes[default]";
+      $default_val = $attributes['default'];
+      $default = "DEFAULT ". $attributes['default'];
     }
   }
 
-  $ret[] = update_sql("ALTER TABLE {". $table ."} RENAME $column TO ". $column ."_old");
-  $ret[] = update_sql("ALTER TABLE {". $table ."} ADD $column_new $type");
-  $ret[] = update_sql("UPDATE {". $table ."} SET $column_new = ". $column ."_old");
-  if ($default) { $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $column_new SET $default"); }
-  if ($not_null) { $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $column_new SET NOT NULL"); }
-  $ret[] = update_sql("ALTER TABLE {". $table ."} DROP ". $column ."_old");
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] RENAME [$column] TO [". $column ."_old]");
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] ADD [$column_new] $type");
+  $ret[] = update_sql("UPDATE [{". $table ."}] SET [$column_new] = [". $column ."_old]");
+  if ($default) { $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$column_new] SET $default"); }
+  if ($not_null) { $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$column_new] SET NOT NULL"); }
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] DROP [". $column ."_old]");
 }
 
 /**
@@ -428,14 +428,14 @@ function update_create_batch_table() {
 function update_fix_compatibility() {
   $ret = array();
   $incompatible = array();
-  $query = db_query("SELECT name, type, status FROM {system} WHERE status = 1 AND type IN ('module','theme')");
+  $query = db_query("SELECT [name], [type], [status] FROM [{system}] WHERE [status] = 1 AND [type] IN ('module', 'theme')");
   while ($result = db_fetch_object($query)) {
     if (update_check_incompatibility($result->name, $result->type)) {
       $incompatible[] = $result->name;
     }
   }
   if (!empty($incompatible)) {
-    $ret[] = update_sql("UPDATE {system} SET status = 0 WHERE name IN ('". implode("','", $incompatible) ."')");
+    $ret[] = update_sql("UPDATE [{system}] SET [status] = 0 WHERE [name] IN ('". implode("', '", $incompatible) ."')");
   }
   return $ret;
 }
Index: includes/actions.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/actions.inc,v
retrieving revision 1.8
diff -u -p -r1.8 actions.inc
--- includes/actions.inc	31 Dec 2007 14:51:04 -0000	1.8
+++ includes/actions.inc	3 Apr 2008 07:55:01 -0000
@@ -54,7 +54,7 @@ function actions_do($action_ids, &$objec
     $where_values = array();
     foreach ($action_ids as $action_id) {
       if (is_numeric($action_id)) {
-        $where[] = 'OR aid = %d';
+        $where[] = 'OR [aid] = %d';
         $where_values[] = $action_id;
       }
       elseif (isset($available_actions[$action_id])) {
@@ -68,7 +68,7 @@ function actions_do($action_ids, &$objec
       $where_clause = implode(' ', $where);
       // Strip off leading 'OR '.
       $where_clause = '('. strstr($where_clause, " ") .')';
-      $result_db = db_query('SELECT * FROM {actions} WHERE '. $where_clause, $where_values);
+      $result_db = db_query('SELECT * FROM [{actions}] WHERE '. $where_clause, $where_values);
       while ($action = db_fetch_object($result_db)) {
         $actions[$action->aid] = $action->parameters ? unserialize($action->parameters) : array();
         $actions[$action->aid]['callback'] = $action->callback;
@@ -93,7 +93,7 @@ function actions_do($action_ids, &$objec
   else {
     // If it's a configurable action, retrieve stored parameters.
     if (is_numeric($action_ids)) {
-      $action = db_fetch_object(db_query("SELECT * FROM {actions} WHERE aid = %d", $action_ids));
+      $action = db_fetch_object(db_query("SELECT * FROM [{actions}] WHERE [aid] = %d", $action_ids));
       $function = $action->callback;
       $context = array_merge($context, unserialize($action->parameters));
       $result[$action_ids] = $function($object, $context, $a1, $a2);
@@ -177,7 +177,7 @@ function actions_list($reset = FALSE) {
  */
 function actions_get_all_actions() {
   $actions = array();
-  $result = db_query("SELECT * FROM {actions}");
+  $result = db_query("SELECT * FROM [{actions}]");
   while ($action = db_fetch_object($result)) {
     $actions[$action->aid] = array(
       'callback' => $action->callback,
@@ -238,7 +238,7 @@ function actions_function_lookup($hash) 
   }
 
   // Must be an instance; must check database.
-  $aid = db_result(db_query("SELECT aid FROM {actions} WHERE MD5(aid) = '%s' AND parameters != ''", $hash));
+  $aid = db_result(db_query("SELECT [aid] FROM [{actions}] WHERE MD5([aid]) = %s AND [parameters] <> %s", $hash, ''));
   return $aid;
 }
 
@@ -255,7 +255,7 @@ function actions_synchronize($actions_in
     $actions_in_code = actions_list();
   }
   $actions_in_db = array();
-  $result = db_query("SELECT * FROM {actions} WHERE parameters = ''");
+  $result = db_query("SELECT * FROM [{actions}] WHERE [parameters] = %s", '');
   while ($action = db_fetch_object($result)) {
     $actions_in_db[$action->callback] = array('aid' => $action->aid, 'description' => $action->description);
   }
@@ -271,7 +271,7 @@ function actions_synchronize($actions_in
       }
       else {
         // This is a new singleton that we don't have an aid for; assign one.
-        db_query("INSERT INTO {actions} (aid, type, callback, parameters, description) VALUES ('%s', '%s', '%s', '%s', '%s')", $callback, $array['type'], $callback, '', $array['description']);
+        db_query("INSERT INTO [{actions}] ([aid], [type], [callback], [parameters], [description]) VALUES (%s, %s, %s, %s, %s)", $callback, $array['type'], $callback, '', $array['description']);
         watchdog('actions', "Action '%action' added.", array('%action' => filter_xss_admin($array['description'])));
       }
     }
@@ -284,14 +284,14 @@ function actions_synchronize($actions_in
 
     foreach ($actions_in_db as $callback => $array) {
       $orphaned[] = $callback;
-      $placeholder[] = "'%s'";
+      $placeholder[] = "%s";
     }
 
     $orphans = implode(', ', $orphaned);
 
     if ($delete_orphans) {
       $placeholders = implode(', ', $placeholder);
-      $results = db_query("SELECT a.aid, a.description FROM {actions} a WHERE callback IN ($placeholders)", $orphaned);
+      $results = db_query("SELECT a.[aid], a.[description] FROM [{actions}] a WHERE [callback] IN ($placeholders)", $orphaned);
       while ($action = db_fetch_object($results)) {
         actions_delete($action->aid);
         watchdog('actions', "Removed orphaned action '%action' from database.", array('%action' => filter_xss_admin($action->description)));
@@ -325,15 +325,15 @@ function actions_synchronize($actions_in
 function actions_save($function, $type, $params, $desc, $aid = NULL) {
   $serialized = serialize($params);
   if ($aid) {
-    db_query("UPDATE {actions} SET callback = '%s', type = '%s', parameters = '%s', description = '%s' WHERE aid = %d", $function, $type, $serialized, $desc, $aid);
+    db_query("UPDATE [{actions}] SET [callback] = %s, [type] = %s, [parameters] = %s, [description] = %s WHERE [aid] = %d", $function, $type, $serialized, $desc, $aid);
     watchdog('actions', 'Action %action saved.', array('%action' => $desc));
   }
   else {
     // aid is the callback for singleton actions so we need to keep a
     // separate table for numeric aids.
-    db_query('INSERT INTO {actions_aid} VALUES (default)');
+    db_query('INSERT INTO [{actions_aid}] VALUES (default)');
     $aid = db_last_insert_id('actions_aid', 'aid');
-    db_query("INSERT INTO {actions} (aid, callback, type, parameters, description) VALUES (%d, '%s', '%s', '%s', '%s')", $aid, $function, $type, $serialized, $desc);
+    db_query("INSERT INTO [{actions}] ([aid], [callback], [type], [parameters], [description]) VALUES (%d, %s, %s, %s, %s)", $aid, $function, $type, $serialized, $desc);
     watchdog('actions', 'Action %action created.', array('%action' => $desc));
   }
 
@@ -350,7 +350,7 @@ function actions_save($function, $type, 
  *   The appropriate action row from the database as an object.
  */
 function actions_load($aid) {
-  return db_fetch_object(db_query("SELECT * FROM {actions} WHERE aid = %d", $aid));
+  return db_fetch_object(db_query("SELECT * FROM [{actions}] WHERE [aid] = %d", $aid));
 }
 
 /**
@@ -360,6 +360,6 @@ function actions_load($aid) {
  *   integer The ID of the action to delete.
  */
 function actions_delete($aid) {
-  db_query("DELETE FROM {actions} WHERE aid = %d", $aid);
+  db_query("DELETE FROM [{actions}] WHERE [aid] = %d", $aid);
   module_invoke_all('actions_delete', $aid);
 }
Index: includes/batch.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/batch.inc,v
retrieving revision 1.14
diff -u -p -r1.14 batch.inc
--- includes/batch.inc	20 Dec 2007 11:57:20 -0000	1.14
+++ includes/batch.inc	3 Apr 2008 07:55:01 -0000
@@ -12,7 +12,7 @@ function _batch_page() {
   $batch =& batch_get();
 
   // Retrieve the current state of batch from db.
-  if (isset($_REQUEST['id']) && $data = db_result(db_query("SELECT batch FROM {batch} WHERE bid = %d AND token = '%s'", $_REQUEST['id'], drupal_get_token($_REQUEST['id'])))) {
+  if (isset($_REQUEST['id']) && $data = db_result(db_query("SELECT [batch] FROM [{batch}] WHERE [bid] = %d AND [token] = %s", $_REQUEST['id'], drupal_get_token($_REQUEST['id'])))) {
     $batch = unserialize($data);
   }
   else {
@@ -305,7 +305,7 @@ function _batch_finished() {
 
   // Cleanup the batch table and unset the global $batch variable.
   if ($batch['progressive']) {
-    db_query("DELETE FROM {batch} WHERE bid = %d", $batch['id']);
+    db_query("DELETE FROM [{batch}] WHERE [bid] = %d", $batch['id']);
   }
   $_batch = $batch;
   $batch = NULL;
@@ -349,6 +349,6 @@ function _batch_finished() {
  */
 function _batch_shutdown() {
   if ($batch = batch_get()) {
-    db_query("UPDATE {batch} SET batch = '%s' WHERE bid = %d", serialize($batch), $batch['id']);
+    db_query("UPDATE [{batch}] SET [batch] = %s WHERE [bid] = %d", serialize($batch), $batch['id']);
   }
 }
Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.206.2.2
diff -u -p -r1.206.2.2 bootstrap.inc
--- includes/bootstrap.inc	11 Feb 2008 14:36:21 -0000	1.206.2.2
+++ includes/bootstrap.inc	3 Apr 2008 07:55:01 -0000
@@ -384,7 +384,7 @@ function drupal_get_filename($type, $nam
   // the database.  This is required because this function is called both
   // before we have a database connection (i.e. during installation) and
   // when a database connection fails.
-  elseif (db_is_active() && (($file = db_result(db_query("SELECT filename FROM {system} WHERE name = '%s' AND type = '%s'", $name, $type))) && file_exists($file))) {
+  elseif (db_is_active() && (($file = db_result(db_query("SELECT [filename] FROM [{system}] WHERE [name] = %s AND [type] = %s", $name, $type))) && file_exists($file))) {
     $files[$type][$name] = $file;
   }
   else {
@@ -420,7 +420,7 @@ function variable_init($conf = array()) 
     $variables = $cached->data;
   }
   else {
-    $result = db_query('SELECT * FROM {variable}');
+    $result = db_query('SELECT * FROM [{variable}]');
     while ($variable = db_fetch_object($result)) {
       $variables[$variable->name] = unserialize($variable->value);
     }
@@ -463,9 +463,9 @@ function variable_set($name, $value) {
   global $conf;
 
   $serialized_value = serialize($value);
-  db_query("UPDATE {variable} SET value = '%s' WHERE name = '%s'", $serialized_value, $name);
+  db_query("UPDATE [{variable}] SET [value] = %s WHERE [name] = %s", $serialized_value, $name);
   if (!db_affected_rows()) {
-    @db_query("INSERT INTO {variable} (name, value) VALUES ('%s', '%s')", $name, $serialized_value);
+    @db_query("INSERT INTO [{variable}] ([name], [value]) VALUES (%s, %s)", $name, $serialized_value);
   }
 
   cache_clear_all('variables', 'cache');
@@ -482,7 +482,7 @@ function variable_set($name, $value) {
 function variable_del($name) {
   global $conf;
 
-  db_query("DELETE FROM {variable} WHERE name = '%s'", $name);
+  db_query("DELETE FROM [{variable}] WHERE [name] = %s", $name);
   cache_clear_all('variables', 'cache');
 
   unset($conf[$name]);
@@ -874,13 +874,19 @@ function drupal_get_messages($type = NUL
  *   TRUE if access is denied, FALSE if access is allowed.
  */
 function drupal_is_denied($type, $mask) {
-  // Because this function is called for every page request, both cached
-  // and non-cached pages, we tried to optimize it as much as possible.
-  // We deny access if the only matching records in the {access} table have
-  // status 0 (deny). If any have status 1 (allow), or if there are no
-  // matching records, we allow access.
-  $sql = "SELECT 1 FROM {access} WHERE type = '%s' AND LOWER('%s') LIKE LOWER(mask) AND status = %d";
-  return db_result(db_query_range($sql, $type, $mask, 0, 0, 1)) && !db_result(db_query_range($sql, $type, $mask, 1, 0, 1));
+  switch ($GLOBALS['db_type']) {
+    case 'ibm_db2':
+    case 'pdo_ibm':
+      return FALSE;
+    default:
+      // Because this function is called for every page request, both cached
+      // and non-cached pages, we tried to optimize it as much as possible.
+      // We deny access if the only matching records in the {access} table have
+      // status 0 (deny). If any have status 1 (allow), or if there are no
+      // matching records, we allow access.
+      $sql = "SELECT 1 FROM [{access}] WHERE [type] = %s AND LOWER(%s) LIKE LOWER([mask]) AND [status] = %d";
+      return db_result(db_query_range($sql, $type, $mask, 0, 0, 1)) && !db_result(db_query_range($sql, $type, $mask, 1, 0, 1));
+  }
 }
 
 /**
@@ -1078,7 +1084,7 @@ function language_list($field = 'languag
   // Init language list
   if (!isset($languages)) {
     if (variable_get('language_count', 1) > 1 || module_exists('locale')) {
-      $result = db_query('SELECT * FROM {languages} ORDER BY weight ASC, name ASC');
+      $result = db_query('SELECT * FROM [{languages}] ORDER BY [weight] ASC, [name] ASC');
       while ($row = db_fetch_object($result)) {
         $languages['language'][$row->language] = $row;
       }
Index: includes/cache.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/cache.inc,v
retrieving revision 1.17
diff -u -p -r1.17 cache.inc
--- includes/cache.inc	29 Jan 2008 11:36:06 -0000	1.17
+++ includes/cache.inc	3 Apr 2008 07:55:01 -0000
@@ -20,10 +20,10 @@ function cache_get($cid, $table = 'cache
     // Reset the variable immediately to prevent a meltdown in heavy load situations.
     variable_set('cache_flush', 0);
     // Time to flush old cache data
-    db_query("DELETE FROM {". $table ."} WHERE expire != %d AND expire <= %d", CACHE_PERMANENT, $cache_flush);
+    db_query("DELETE FROM [{". $table ."}] WHERE [expire] <> %d AND [expire] <= %d", CACHE_PERMANENT, $cache_flush);
   }
 
-  $cache = db_fetch_object(db_query("SELECT data, created, headers, expire, serialized FROM {". $table ."} WHERE cid = '%s'", $cid));
+  $cache = db_fetch_object(db_query("SELECT [data], [created], [headers], [expire], [serialized] FROM [{". $table ."}] WHERE [cid] = %s", $cid));
   if (isset($cache->data)) {
     // If the data is permanent or we're not enforcing a minimum cache lifetime
     // always return the cached data.
@@ -106,9 +106,17 @@ function cache_set($cid, $data, $table =
     $serialized = 1;
   }
   $created = time();
-  db_query("UPDATE {". $table ."} SET data = %b, created = %d, expire = %d, headers = '%s', serialized = %d WHERE cid = '%s'", $data, $created, $expire, $headers, $serialized, $cid);
+  $values = array(
+    array('field' => 'data', 'placeholder' => '%b', 'data' => $data),
+    array('field' => 'created', 'placeholder' => '%d', 'data' => $created),
+    array('field' => 'expire', 'placeholder' => '%d', 'data' => $expire),
+    array('field' => 'headers', 'placeholder' => "%s", 'data' => $headers),
+    array('field' => 'serialized', 'placeholder' => '%d', 'data' => $serialized),
+  );
+  db_query_update($table, $values, "[cid] = %s", $cid);
   if (!db_affected_rows()) {
-    @db_query("INSERT INTO {". $table ."} (cid, data, created, expire, headers, serialized) VALUES ('%s', %b, %d, %d, '%s', %d)", $cid, $data, $created, $expire, $headers, $serialized);
+    $values[] = array('field' => 'cid', 'placeholder' => "%s", 'data' => $cid);
+    db_query_insert($table, $values);
   }
 }
 
@@ -157,26 +165,26 @@ function cache_clear_all($cid = NULL, $t
       else if (time() > ($cache_flush + variable_get('cache_lifetime', 0))) {
         // Clear the cache for everyone, cache_flush_delay seconds have
         // passed since the first request to clear the cache.
-        db_query("DELETE FROM {". $table ."} WHERE expire != %d AND expire < %d", CACHE_PERMANENT, time());
+        db_query("DELETE FROM [{". $table ."}] WHERE [expire] <> %d AND [expire] < %d", CACHE_PERMANENT, time());
         variable_set('cache_flush', 0);
       }
     }
     else {
       // No minimum cache lifetime, flush all temporary cache entries now.
-      db_query("DELETE FROM {". $table ."} WHERE expire != %d AND expire < %d", CACHE_PERMANENT, time());
+      db_query("DELETE FROM [{". $table ."}] WHERE [expire] <> %d AND [expire] < %d", CACHE_PERMANENT, time());
     }
   }
   else {
     if ($wildcard) {
       if ($cid == '*') {
-        db_query("DELETE FROM {". $table ."}");
+        db_query("DELETE FROM [{". $table ."}]");
       }
       else {
-        db_query("DELETE FROM {". $table ."} WHERE cid LIKE '%s%%'", $cid);
+        db_query("DELETE FROM [{". $table ."}] WHERE [cid] LIKE %s", $cid ."%");
       }
     }
     else {
-      db_query("DELETE FROM {". $table ."} WHERE cid = '%s'", $cid);
+      db_query("DELETE FROM [{". $table ."}] WHERE [cid] = %s", $cid);
     }
   }
 }
Index: includes/common.db2.inc
===================================================================
RCS file: includes/common.db2.inc
diff -N includes/common.db2.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/common.db2.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,397 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Functions shared between ibm_db2 and pdo_ibm database engines.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * Indicates the string to use to quote identifiers and names.
+ */
+define('DB_QUOTE_OPERATOR', '"');
+
+/**
+ * Indicates the concatenation operator.
+ */
+define('DB_CONCAT_OPERATOR', '||');
+
+/**
+ * Indicates the name of the SQL strtoupper function.
+ */
+define('DB_UPPER', 'UPPER');
+
+/**
+ * Indicates the SQL to generate a random number between 0.00 and 1.00.
+ */
+define('DB_RAND', 'RAND()');
+
+/**
+ * Indicates the name of the SQL strlen function.
+ */
+define('DB_STRLEN', 'LENGTH');
+
+/**
+ * Indicates the name of the SQL substr function.
+ */
+define('DB_SUBSTR', 'SUBSTR');
+
+/**
+ * Replace all escape characters in a query, based on the database specific
+ * implementation.
+ *
+ * Queries sent to Drupal should wrap all identifiers and names in square
+ * brackets. This function will search for this syntax and replace it as
+ * corresponding escape characters, based on the database specific
+ * requirement.
+ */
+function db_escape_quote($sql) {
+  return preg_replace('/\[([A-Za-z0-9_]+)\]/', DB_QUOTE_OPERATOR .'\1'. DB_QUOTE_OPERATOR, $sql);
+}
+
+/**
+ * Return a portably concatenate strings.
+ *
+ * @param ...
+ *   Variable number of string parameters.
+ * @return
+ *   Portably concatenate strings.
+ */
+function db_concat() {
+  $args = func_get_args();
+  return implode(DB_CONCAT_OPERATOR, $args);
+}
+
+/**
+ * Returns a string that is the equivalent of MySQL IFNULL or Oracle NVL.
+ *
+ * @return
+ *   If $expr1 is not NULL, returns $expr1; otherwise it returns $expr2.
+ */
+function db_if_null($expr1, $expr2) {
+  return " CASE WHEN $expr1 IS NULL THEN $expr2 ELSE $expr1 END ";
+}
+
+/**
+ * Report database status.
+ */
+function db_status_report($phase) {
+  $t = get_t();
+
+  $version = db_version();
+
+  $form['db2'] = array(
+    'title' => $t('DB2 database'),
+    'value' => $version,
+  );
+
+  if (version_compare($version, DRUPAL_MINIMUM_DB2) < 0) {
+    $form['db2']['severity'] = REQUIREMENT_ERROR;
+    $form['db2']['description'] = $t('Your DB2 Server is too old. Drupal requires at least DB2 %version.', array('%version' => DRUPAL_MINIMUM_DB2));
+  }
+
+  return $form;
+}
+
+/**
+ * Returns the version of the database server currently in use.
+ *
+ * @return Database server version
+ */
+function db_version() {
+  $banner = db_result(db_query("SELECT SERVICE_LEVEL FROM TABLE (SYSPROC.ENV_GET_INST_INFO()) AS INSTANCEINFO"));
+  preg_match('/\s*v([0-9.]+)\s*/', $banner, $version);
+  return array_pop($version);
+}
+
+/**
+ * Insert a row of record into database.
+ *
+ * @param $table
+ *   Table to insert.
+ * @param $values
+ *   An array containing the insert values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_insert($table, $values) {
+  $fields = array();
+  $placeholders = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = $value['field'];
+    $placeholders[] = $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "INSERT INTO [{". $table ."}] ([". implode('], [', $fields) ."]) VALUES (". implode(', ', $placeholders) .")";
+  return db_query($query, $data);
+}
+
+/**
+ * Update a row of record in database.
+ *
+ * @param $table
+ *   Table to update.
+ * @param $values
+ *   An array containing the update values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_update($table, $values, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 3);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $fields = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = '['. $value['field'] .'] = '. $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "UPDATE [{". $table ."}] SET ". implode(', ', $fields);
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = array_merge($data, $args);
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Delete a row of record from database.
+ *
+ * @param $table
+ *   Table to delete.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_delete($table, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 2);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $data = array();
+
+  $query = "DELETE FROM [{". $table ."}]";
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = $args;
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Returns the last insert id. This function is thread safe.
+ *
+ * @param $table
+ *   The name of the table you inserted into.
+ * @param $field
+ *   The name of the autoincrement field.
+ */
+function db_last_insert_id($table, $field) {
+  return db_result(db_query("SELECT SYSIBM.IDENTITY_VAL_LOCAL() FROM [{". $table ."}]"));
+}
+
+/**
+ * Runs a limited-range query in the active database.
+ *
+ * Use this as a substitute for db_query() when a subset of the query
+ * is to be returned.
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: use NULL as arguments substitution for %b and %c. This will be
+ *   replaced as corresponding empty LOB value placeholder, based on the
+ *   database specific representation.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $from
+ *   The first result row to return.
+ * @param $count
+ *   The maximum number of result rows to return.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_range($query) {
+  $args = func_get_args();
+  $count = array_pop($args);
+  $from = array_pop($args);
+  array_shift($args);
+
+  $query = 'SELECT * FROM (SELECT [sub1].*, ROW_NUMBER() OVER() AS [line2] FROM ('. $query .') AS [sub1]) AS [sub2] WHERE [line2] BETWEEN '. $from .' AND '. ($from + $count);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Runs a SELECT query and stores its results in a temporary table.
+ *
+ * Use this as a substitute for db_query() when the results need to stored
+ * in a temporary table. Temporary tables exist for the duration of the page
+ * request.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * Note that if you need to know how many results were returned, you should do
+ * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() do
+ * not give consistent result across different database types in this case.
+ *
+ * @param $query
+ *   A string containing a normal SELECT SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: use NULL as arguments substitution for %b and %c. This will be
+ *   replaced as corresponding empty LOB value placeholder, based on the
+ *   database specific representation.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $table
+ *   The name of the temporary table to select into. This name will not be
+ *   prefixed as there is no risk of collision.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_temporary($query) {
+  $args = func_get_args();
+  $tablename = array_pop($args);
+  array_shift($args);
+
+  $query = 'DECLARE GLOBAL TEMPORARY TABLE ['. $tablename .'] AS ('. $query .') DEFINITION ONLY INCLUDING IDENTITY COLUMN ATTRIBUTES INCLUDING COLUMN DEFAULTS ON COMMIT PRESERVE ROWS NOT LOGGED';
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Lock a table.
+ * This function automatically starts a transaction.
+ */
+function db_lock_table($table) {
+  db_query('LOCK TABLE [{'. db_escape_table($table) .'}] IN EXCLUSIVE MODE');
+}
+
+/**
+ * Unlock all locked tables.
+ * This function automatically commits a transaction.
+ */
+function db_unlock_tables() {
+  db_query('COMMIT');
+}
+
+/**
+ * Check if a table exists.
+ */
+function db_table_exists($table) {
+  return (bool) db_result(db_query("SELECT COUNT(TABLE_NAME) FROM SYSIBM.TABLES WHERE TABLE_NAME LIKE '{". db_escape_table($table) ."}'"));
+}
+
+/**
+ * Check if a column exists in the given table.
+ */
+function db_column_exists($table, $column) {
+  return (bool) db_result(db_query("SELECT COUNT(COLUMN_NAME) FROM SYSIBM.COLUMNS WHERE TABLE_NAME LIKE '{". db_escape_table($table) ."}' AND COLUMN_NAME LIKE '" . db_escape_table($column) ."'"));
+}
+
+/**
+ * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
+ * the SELECT list entry of the given query and the resulting query is returned.
+ * This function only applies the wrapper if a DISTINCT doesn't already exist in
+ * the query.
+ *
+ * @param $table Table containing the field to set as DISTINCT
+ * @param $field Field to set as DISTINCT
+ * @param $query Query to apply the wrapper to
+ * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ */
+function db_distinct_field($table, $field, $query) {
+  $field_to_select = 'DISTINCT (['. $table .'].['. $field .'])';
+  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+  $query = preg_replace('/(SELECT.*)(?:\['. $table .'\]\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(\['. $table .'\]\.)\['. $field .'\](.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+  $query = preg_replace('/(ORDER BY )(?!\['. $table .'\]\.\['. $field .'\])/', '\1'."[$table].[$field], ", $query);
+  return $query;
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.756.2.7
diff -u -p -r1.756.2.7 common.inc
--- includes/common.inc	27 Feb 2008 19:44:44 -0000	1.756.2.7
+++ includes/common.inc	3 Apr 2008 07:55:01 -0000
@@ -856,7 +856,7 @@ function valid_url($url, $absolute = FAL
  *   The name of an event.
  */
 function flood_register_event($name) {
-  db_query("INSERT INTO {flood} (event, hostname, timestamp) VALUES ('%s', '%s', %d)", $name, ip_address(), time());
+  db_query("INSERT INTO [{flood}] ([event], [hostname], [timestamp]) VALUES (%s, %s, %d)", $name, ip_address(), time());
 }
 
 /**
@@ -873,7 +873,7 @@ function flood_register_event($name) {
  *   True if the user did not exceed the hourly threshold. False otherwise.
  */
 function flood_is_allowed($name, $threshold) {
-  $number = db_result(db_query("SELECT COUNT(*) FROM {flood} WHERE event = '%s' AND hostname = '%s' AND timestamp > %d", $name, ip_address(), time() - 3600));
+  $number = db_result(db_query("SELECT COUNT(*) FROM [{flood}] WHERE [event] = %s AND [hostname] = %s AND [timestamp] > %d", $name, ip_address(), time() - 3600));
   return ($number < $threshold ? TRUE : FALSE);
 }
 
@@ -3183,7 +3183,9 @@ function _drupal_initialize_schema($modu
  **/
 function drupal_schema_fields_sql($table, $prefix = NULL) {
   $schema = drupal_get_schema($table);
-  $fields = array_keys($schema['fields']);
+  foreach ($schema['fields'] as $key => $value) {
+    $fields[] = '['. $key .']';
+  }
   if ($prefix) {
     $columns = array();
     foreach ($fields as $field) {
@@ -3208,7 +3210,7 @@ function drupal_schema_fields_sql($table
  *   The object to write. This is a reference, as defaults according to
  *   the schema may be filled in on the object, as well as ID on the serial
  *   type(s). Both array an object types may be passed.
- * @param $update
+ * @param primary_keys
  *   If this is an update, specify the primary keys' field names. It is the
  *   caller's responsibility to know if a record for this object already
  *   exists in the database. If there is only 1 key, you may pass a simple string.
@@ -3219,10 +3221,10 @@ function drupal_schema_fields_sql($table
  *   the $table. For example, $object->nid will be populated after inserting
  *   a new node.
  */
-function drupal_write_record($table, &$object, $update = array()) {
-  // Standardize $update to an array.
-  if (is_string($update)) {
-    $update = array($update);
+function drupal_write_record($table, &$object, $primary_keys = array()) {
+  // Standardize $primary_keys to an array.
+  if (!is_array($primary_keys)) {
+    $primary_keys = array($primary_keys);
   }
 
   // Convert to an object if needed.
@@ -3239,18 +3241,19 @@ function drupal_write_record($table, &$o
     return FALSE;
   }
 
-  $fields = $defs = $values = $serials = $placeholders = array();
+  $values = array();
+  $serials = array();
 
   // Go through our schema, build SQL, and when inserting, fill in defaults for
   // fields that are not set.
   foreach ($schema['fields'] as $field => $info) {
     // Special case -- skip serial types if we are updating.
-    if ($info['type'] == 'serial' && count($update)) {
+    if ($info['type'] == 'serial' && count($primary_keys)) {
       continue;
     }
 
     // For inserts, populate defaults from Schema if not already provided
-    if (!isset($object->$field) && !count($update) && isset($info['default'])) {
+    if (!isset($object->$field) && !count($primary_keys) && isset($info['default'])) {
       $object->$field = $info['default'];
     }
 
@@ -3263,44 +3266,52 @@ function drupal_write_record($table, &$o
 
     // Build arrays for the fields, placeholders, and values in our query.
     if (isset($object->$field)) {
-      $fields[] = $field;
-      $placeholders[] = db_type_placeholder($info['type']);
+      $value['field'] = $field;
+      $value['placeholder'] = db_type_placeholder($info['type']);
 
       if (empty($info['serialize'])) {
-        $values[] = $object->$field;
+        $value['data'] = $object->$field;
+      }
+      elseif (!empty($object->$field)) {
+        $value['data'] = serialize($object->$field);
       }
       else {
-        $values[] = serialize($object->$field);
+        $value['data'] = '';
       }
+
+      $values[] = $value;
+    }
+  }
+
+  if (empty($values)) {
+    // No changes requested.
+    // If we began with an array, convert back so we don't surprise the caller.
+    if ($array) {
+      $object = (array) $object;
     }
+    return;
   }
 
-  // Build the SQL.
-  $query = '';
-  if (!count($update)) {
-    $query = "INSERT INTO {". $table ."} (". implode(', ', $fields) .') VALUES ('. implode(', ', $placeholders) .')';
+  // Execute the SQL.
+  if (!count($primary_keys)) {
+    $result = db_query_insert($table, $values);
     $return = SAVED_NEW;
   }
   else {
-    $query = '';
-    foreach ($fields as $id => $field) {
-      if ($query) {
-        $query .= ', ';
+    foreach ($primary_keys as $key => $value){
+      // $primary_key is NOT in key-value pair format.
+      if (!isset($schema['fields'][$key]) && isset($schema['fields'][$value])) {
+        $key = $value;
+        $value = $object->$key;
       }
-      $query .= $field .' = '. $placeholders[$id];
-    }
-
-    foreach ($update as $key){
-      $conditions[] = "$key = ". db_type_placeholder($schema['fields'][$key]['type']);
-      $values[] = $object->$key;
+      $conditions[] = "[$key] = ". db_type_placeholder($schema['fields'][$key]['type']);
+      $args[] = $value;
     }
-
-    $query = "UPDATE {". $table ."} SET $query WHERE ". implode(' AND ', $conditions);
+    $result = db_query_update($table, $values, implode(' AND ', $conditions), $args);
     $return = SAVED_UPDATED;
   }
 
-  // Execute the SQL.
-  if (db_query($query, $values)) {
+  if ($result) {
     if ($serials) {
       // Get last insert ids and fill them in.
       foreach ($serials as $field) {
@@ -3320,6 +3331,47 @@ function drupal_write_record($table, &$o
 }
 
 /**
+ * Drop a record from the database based upon the schema.
+ *
+ * @param $table
+ *   The name of the table; this must exist in schema API.
+ * @param $object
+ *   The object to drop. This is a reference, as defaults according to
+ *   the schema may be filled in on the object, as well as ID on the serial
+ *   type(s). Both array an object types may be passed.
+ * @param primary_keys
+ *   Specify the primary keys' field names. If there is only 1 key, you may
+ *   pass a simple string.
+ * @return (boolean) Failure to write a record will return FALSE. Otherwise,
+ *   TRUE is returned.
+ */
+function drupal_drop_record($table, $object, $primary_keys = array()) {
+  // Standardize $primary_keys to an array.
+  if (!is_array($primary_keys)) {
+    $primary_keys = array($primary_keys);
+  }
+
+  // Convert to an object if needed.
+  if ($array = is_array($object)) {
+    $object = (object) $object;
+  }
+
+  $schema = drupal_get_schema($table);
+  if (empty($schema)) {
+    return FALSE;
+  }
+
+  // Execute the request.
+  foreach ($primary_keys as $key){
+    $conditions[] = "[$key] = ". db_type_placeholder($schema['fields'][$key]['type']);
+    $args[] = $object->$key;
+  }
+  db_query_delete($table, implode(' AND ', $conditions), $args);
+
+  return SAVED_DELETED;
+}
+
+/**
  * @} End of "ingroup schemaapi".
  */
 
Index: includes/common.mysql.inc
===================================================================
RCS file: includes/common.mysql.inc
diff -N includes/common.mysql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/common.mysql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,385 @@
+<?php
+// $Id: common.mysql.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Functions shared between mysql, mysqli and pdo_mysql database engines.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * Indicates the string to use to quote identifiers and names.
+ */
+define('DB_QUOTE_OPERATOR', '`');
+
+/**
+ * Indicates the concatenation operator.
+ */
+define('DB_CONCAT_OPERATOR', '+');
+
+/**
+ * Indicates the name of the SQL strtoupper function.
+ */
+define('DB_UPPER', 'UPPER');
+
+/**
+ * Indicates the SQL to generate a random number between 0.00 and 1.00.
+ */
+define('DB_RAND', 'RAND()');
+
+/**
+ * Indicates the name of the SQL strlen function.
+ */
+define('DB_STRLEN', 'LENGTH');
+
+/**
+ * Indicates the name of the SQL substring function.
+ */
+define('DB_SUBSTR', 'SUBSTRING');
+
+/**
+ * Replace all escape characters in a query, based on the database specific
+ * implementation.
+ *
+ * Queries sent to Drupal should wrap all identifiers and names in square
+ * brackets. This function will search for this syntax and replace it as
+ * corresponding escape characters, based on the database specific
+ * requirement.
+ */
+function db_escape_quote($sql) {
+  return preg_replace('/\[([A-Za-z0-9_]+)\]/', DB_QUOTE_OPERATOR .'\1'. DB_QUOTE_OPERATOR, $sql);
+}
+
+/**
+ * Portable SQL generating function.
+ *
+ * @param ...
+ *   Variable number of string parameters.
+ * @return
+ *   Portably concatenate strings.
+ */
+function db_concat() {
+  $args = func_get_args();
+  $return = implode(', ', $args);
+  return (strlen($return) > 0) ? "CONCAT($return)" : '';
+}
+
+/**
+ * Returns a string that is the equivalent of MySQL IFNULL or Oracle NVL.
+ *
+ * @return
+ *   If $expr1 is not NULL, returns $expr1; otherwise it returns $expr2.
+ */
+function db_if_null($expr1, $expr2) {
+  return " IFNULL($expr1, $expr2) ";
+}
+
+/**
+ * Report database status.
+ */
+function db_status_report($phase) {
+  $t = get_t();
+
+  $version = db_version();
+
+  $form['mysql'] = array(
+    'title' => $t('MySQL database'),
+    'value' => ($phase == 'runtime') ? l($version, 'admin/reports/status/sql') : $version,
+  );
+
+  if (version_compare($version, DRUPAL_MINIMUM_MYSQL) < 0) {
+    $form['mysql']['severity'] = REQUIREMENT_ERROR;
+    $form['mysql']['description'] = $t('Your MySQL Server is too old. Drupal requires at least MySQL %version.', array('%version' => DRUPAL_MINIMUM_MYSQL));
+  }
+
+  return $form;
+}
+
+/**
+ * Returns the version of the database server currently in use.
+ *
+ * @return Database server version
+ */
+function db_version() {
+  global $active_db;
+  list($version) = explode('-', db_result(db_query("SELECT VERSION();")));
+  return $version;
+}
+
+/**
+ * Insert a row of record into database.
+ *
+ * @param $table
+ *   Table to insert.
+ * @param $values
+ *   An array containing the insert values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_insert($table, $values) {
+  $fields = array();
+  $placeholders = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = $value['field'];
+    $placeholders[] = $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "INSERT INTO [{". $table ."}] ([". implode('], [', $fields) ."]) VALUES (". implode(', ', $placeholders) .")";
+  return db_query($query, $data);
+}
+
+/**
+ * Update a row of record in database.
+ *
+ * @param $table
+ *   Table to update.
+ * @param $values
+ *   An array containing the update values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_update($table, $values, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 3);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $fields = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = '['. $value['field'] .'] = '. $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "UPDATE [{". $table ."}] SET ". implode(', ', $fields);
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = array_merge($data, $args);
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Delete a row of record from database.
+ *
+ * @param $table
+ *   Table to delete.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_delete($table, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 2);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $data = array();
+
+  $query = "DELETE FROM [{". $table ."}]";
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = $args;
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Returns the last insert id.
+ *
+ * @param $table
+ *   The name of the table you inserted into.
+ * @param $field
+ *   The name of the autoincrement field.
+ */
+function db_last_insert_id($table, $field) {
+  return db_result(db_query('SELECT LAST_INSERT_ID()'));
+}
+
+/**
+ * Runs a limited-range query in the active database.
+ *
+ * Use this as a substitute for db_query() when a subset of the query is to be
+ * returned.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $from
+ *   The first result row to return.
+ * @param $count
+ *   The maximum number of result rows to return.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_range($query) {
+  $args = func_get_args();
+  $count = array_pop($args);
+  $from = array_pop($args);
+  array_shift($args);
+
+  $query .= ' LIMIT '. (int) $from .', '. (int) $count;
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Runs a SELECT query and stores its results in a temporary table.
+ *
+ * Use this as a substitute for db_query() when the results need to stored
+ * in a temporary table. Temporary tables exist for the duration of the page
+ * request.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * Note that if you need to know how many results were returned, you should do
+ * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
+ * not give consistent result across different database types in this case.
+ *
+ * @param $query
+ *   A string containing a normal SELECT SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $table
+ *   The name of the temporary table to select into. This name will not be
+ *   prefixed as there is no risk of collision.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_temporary($query) {
+  $args = func_get_args();
+  $tablename = array_pop($args);
+  array_shift($args);
+
+  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' Engine=HEAP SELECT', $query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Lock a table.
+ */
+function db_lock_table($table) {
+  db_query('LOCK TABLES [{'. db_escape_table($table) .'}] WRITE');
+}
+
+/**
+ * Unlock all locked tables.
+ */
+function db_unlock_tables() {
+  db_query('UNLOCK TABLES');
+}
+
+/**
+ * Check if a table exists.
+ */
+function db_table_exists($table) {
+  return (bool) db_fetch_object(db_query("SHOW TABLES LIKE '{". db_escape_table($table) ."}'"));
+}
+
+/**
+ * Check if a column exists in the given table.
+ */
+function db_column_exists($table, $column) {
+  return (bool) db_fetch_object(db_query("SHOW COLUMNS FROM [{". db_escape_table($table) ."}] LIKE '". db_escape_table($column) ."'"));
+}
+
+/**
+ * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
+ * the SELECT list entry of the given query and the resulting query is returned.
+ * This function only applies the wrapper if a DISTINCT doesn't already exist in
+ * the query.
+ *
+ * @param $table Table containing the field to set as DISTINCT
+ * @param $field Field to set as DISTINCT
+ * @param $query Query to apply the wrapper to
+ * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ */
+function db_distinct_field($table, $field, $query) {
+  $field_to_select = 'DISTINCT(['. $table .'].['. $field .'])';
+  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+  return preg_replace('/(SELECT.*)(?:\['. $table .'\]\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(\['. $table .'\]\.)\['. $field .'\](.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/common.oracle.inc
===================================================================
RCS file: includes/common.oracle.inc
diff -N includes/common.oracle.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/common.oracle.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,476 @@
+<?php
+// $Id: common.oracle.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Functions shared between oci8 and pdo_oci database engines.
+ */
+
+/**
+ * Indicates the maximum size of last_results pool. We will free old
+ * statements which exists this limit, in order to prevent ORA-01000 error.
+ */
+define('ORACLE_MAX_CACHE_STMT', 256);
+
+/**
+ * Indicates the empty string placeholder.
+ */
+define('ORACLE_EMPTY_STRING_PLACEHOLDER', "\x01");
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * Indicates the string to use to quote identifiers and names.
+ */
+define('DB_QUOTE_OPERATOR', '"');
+
+/**
+ * Indicates the concatenation operator.
+ */
+define('DB_CONCAT_OPERATOR', '||');
+
+/**
+ * Indicates the name of the SQL strtoupper function.
+ */
+define('DB_UPPER', 'UPPER');
+
+/**
+ * Indicates the SQL to generate a random number between 0.00 and 1.00.
+ */
+define('DB_RAND', 'ABS(MOD(DBMS_RANDOM.RANDOM,10000001)/10000000)');
+
+/**
+ * Indicates the name of the SQL strlen function.
+ */
+define('DB_STRLEN', 'LENGTH');
+
+/**
+ * Indicates the name of the SQL substr function.
+ */
+define('DB_SUBSTR', 'SUBSTR');
+
+/**
+ * Replace all escape characters in a query, based on the database specific
+ * implementation.
+ *
+ * Queries sent to Drupal should wrap all identifiers and names in square
+ * brackets. This function will search for this syntax and replace it as
+ * corresponding escape characters, based on the database specific
+ * requirement.
+ */
+function db_escape_quote($sql) {
+  return preg_replace_callback('/\[([A-Za-z0-9_]+)\]/', '_db_escape_quote_callback', $sql);
+}
+
+/**
+ * Helper function for db_escape_quote().
+ */
+function _db_escape_quote_callback($matches) {
+  $match = $matches[1];
+  if (strlen($match) > 30) {
+    // Try to fetch mapping, if not exists, set it up.
+    $trim = variable_get('oracle_'. $match, NULL);
+    if (!$trim) {
+      // Fetch last counter, and +1 for next mapping.
+      $count = variable_get('_db_escape_quote', 0) + 1;
+      variable_set('_db_escape_quote', $count);
+      // Setup mapping and reverse mapping.
+      $trim = substr($match, 0, 30 - strlen($count)) . $count;
+      variable_set('oracle_'. $match, $trim);
+      variable_set('oracle_'. $trim, $match);
+      $match = $trim;
+    }
+  }
+  return DB_QUOTE_OPERATOR . $match . DB_QUOTE_OPERATOR;
+}
+
+/**
+ * Return a portably concatenate strings.
+ *
+ * @param ...
+ *   Variable number of string parameters.
+ * @return
+ *   Portably concatenate strings.
+ */
+function db_concat() {
+  $args = func_get_args();
+  return implode(DB_CONCAT_OPERATOR, $args);
+}
+
+/**
+ * Returns a string that is the equivalent of MySQL IFNULL or Oracle NVL.
+ *
+ * @return
+ *   If $expr1 is not NULL, returns $expr1; otherwise it returns $expr2.
+ */
+function db_if_null($expr1, $expr2) {
+  return " NVL($expr1, $expr2) ";
+}
+
+/**
+ * Report database status.
+ */
+function db_status_report($phase) {
+  $t = get_t();
+
+  $version = db_version();
+
+  $form['oracle'] = array(
+    'title' => $t('Oracle database'),
+    'value' => $version,
+  );
+
+  if (version_compare($version, DRUPAL_MINIMUM_ORACLE) < 0) {
+    $form['oracle']['severity'] = REQUIREMENT_ERROR;
+    $form['oracle']['description'] = $t('Your Oracle Server is too old. Drupal requires at least Oracle %version.', array('%version' => DRUPAL_MINIMUM_ORACLE));
+  }
+
+  return $form;
+}
+
+/**
+ * Returns the version of the database server currently in use.
+ *
+ * @return Database server version
+ */
+function db_version() {
+  $banner = db_result(db_query('SELECT BANNER FROM SYS.V_$VERSION'));
+  preg_match('/\s([0-9.]+)\s/', $banner, $version);
+  return array_pop($version);
+}
+
+/**
+ * Insert a row of record into database.
+ *
+ * @param $table
+ *   Table to insert.
+ * @param $values
+ *   An array containing the insert values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_insert($table, $values) {
+  $fields = array();
+  $placeholders = array();
+  $args = array();
+  $lob_fields = array();
+  $lob_placeholders = array();
+  $lob_args = array();
+  foreach ($values as $value) {
+    $fields[] = $value['field'];
+    switch ($value['placeholder']) {
+      case '%b':
+        $placeholders[] = 'EMPTY_BLOB()';
+        $lob_fields[] = $value['field'];
+        $lob_placeholders[] = $value['placeholder'];
+        $lob_args[] = $value['data'];
+        break;
+      case '%c':
+        $placeholders[] = 'EMPTY_CLOB()';
+        $lob_fields[] = $value['field'];
+        $lob_placeholders[] = $value['placeholder'];
+        $lob_args[] = $value['data'];
+        break;
+      default:
+        $placeholders[] = $value['placeholder'];
+        $args[] = $value['data'];
+    }
+  }
+
+  $query = "INSERT INTO [{". $table ."}] ([". implode('], [', $fields) ."]) VALUES (". implode(', ', $placeholders) .")";
+  if (count($lob_fields)) {
+    $query .= " RETURNING [". implode('], [', $lob_fields) ."] INTO ". implode(', ', $lob_placeholders);
+    $args = array_merge($args, $lob_args);
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Update a row of record in database.
+ *
+ * @param $table
+ *   Table to update.
+ * @param $values
+ *   An array containing the update values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_update($table, $values, $where_clause = NULL) {
+  global $active_db, $last_result, $queries;
+
+  $where_args = func_get_args();
+  $where_args = array_slice($where_args, 3);
+  if (isset($where_args[0]) and is_array($where_args[0])) { // 'All arguments in one array' syntax
+    $where_args = $where_args[0];
+  }
+
+  $fields = array();
+  $args = array();
+  $lob_fields = array();
+  $lob_placeholders = array();
+  $lob_args = array();
+  foreach ($values as $value) {
+    switch ($value['placeholder']) {
+      case '%b':
+        $fields[] = '['. $value['field'] .'] = EMPTY_BLOB()';
+        $lob_fields[] = $value['field'];
+        $lob_placeholders[] = $value['placeholder'];
+        $lob_args[] = $value['data'];
+        break;
+      case '%c':
+        $fields[] = '['. $value['field'] .'] = EMPTY_CLOB()';
+        $lob_fields[] = $value['field'];
+        $lob_placeholders[] = $value['placeholder'];
+        $lob_args[] = $value['data'];
+        break;
+      default:
+        $fields[] = '['. $value['field'] .'] = '. $value['placeholder'];
+        $args[] = $value['data'];
+    }
+  }
+
+  $query = "UPDATE [{". $table ."}] SET ". implode(', ', $fields);
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $args = array_merge($args, $where_args);
+  }
+  if (count($lob_fields)) {
+    $query .= " RETURNING [". implode('], [', $lob_fields) ."] INTO ". implode(', ', $lob_placeholders);
+    $args = array_merge($args, $lob_args);
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Delete a row of record from database.
+ *
+ * @param $table
+ *   Table to delete.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_delete($table, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 2);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $query['query'] = "DELETE FROM [{". $table ."}]";
+  if ($where_clause) {
+    $query['query'] .= " WHERE ". $where_clause;
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Returns the last insert id. This function is thread safe.
+ *
+ * @param $table
+ *   The name of the table you inserted into.
+ * @param $field
+ *   The name of the autoincrement field.
+ */
+function db_last_insert_id($table, $field) {
+  return db_result(db_query("SELECT [seq_{". $table ."}_" . $field ."].CURRVAL FROM DUAL"));
+}
+
+/**
+ * Runs a limited-range query in the active database.
+ *
+ * Use this as a substitute for db_query() when a subset of the query
+ * is to be returned.
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: use NULL as arguments substitution for %b and %c. This will be
+ *   replaced as corresponding empty LOB value placeholder, based on the
+ *   database specific representation.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $from
+ *   The first result row to return.
+ * @param $count
+ *   The maximum number of result rows to return.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_range($query) {
+  $args = func_get_args();
+  $count = array_pop($args);
+  $from = array_pop($args);
+  array_shift($args);
+
+  $query = 'SELECT * FROM (SELECT [sub1].*, ROWNUM AS [line2] FROM ('. $query .') [sub1]) WHERE [line2] BETWEEN '. ($from + 1) .' AND '. ($from + $count);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Runs a SELECT query and stores its results in a temporary table.
+ *
+ * Use this as a substitute for db_query() when the results need to stored
+ * in a temporary table. Temporary tables exist for the duration of the page
+ * request.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * Note that if you need to know how many results were returned, you should do
+ * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() do
+ * not give consistent result across different database types in this case.
+ *
+ * @param $query
+ *   A string containing a normal SELECT SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: use NULL as arguments substitution for %b and %c. This will be
+ *   replaced as corresponding empty LOB value placeholder, based on the
+ *   database specific representation.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $table
+ *   The name of the temporary table to select into. This name will not be
+ *   prefixed as there is no risk of collision.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_temporary($query) {
+  $args = func_get_args();
+  $tablename = array_pop($args);
+  array_shift($args);
+
+  $query = preg_replace('/^SELECT/i', 'CREATE GLOBAL TEMPORARY TABLE ['. $tablename .'] ON COMMIT PRESERVE ROWS AS SELECT', $query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Lock a table.
+ * This function automatically starts a transaction.
+ */
+function db_lock_table($table) {
+  db_query('LOCK TABLE [{'. db_escape_table($table) .'}] IN EXCLUSIVE MODE');
+}
+
+/**
+ * Unlock all locked tables.
+ * This function automatically commits a transaction.
+ */
+function db_unlock_tables() {
+  db_query('COMMIT');
+}
+
+/**
+ * Check if a table exists.
+ */
+function db_table_exists($table) {
+  return db_result(db_query("SELECT COUNT(TABLE_NAME) FROM USER_TABLES WHERE TABLE_NAME LIKE '{". db_escape_table($table) ."}'")) ? TRUE : FALSE;
+}
+
+/**
+ * Check if a column exists in the given table.
+ */
+function db_column_exists($table, $column) {
+  return db_result(db_query("SELECT COUNT(COLUMN_NAME) FROM USER_TAB_COLS WHERE TABLE_NAME LIKE '{". db_escape_table($table) ."}' AND COLUMN_NAME LIKE '". db_escape_table($column) ."'")) ? TRUE : FALSE;
+}
+
+/**
+ * Check if constraint exists in the given table.
+ */
+function db_constraint_exists($table, $fields) {
+  $queries = array();
+  foreach ($fields as $key => $value) {
+    $queries[] = "SELECT CONSTRAINT_NAME FROM USER_CONS_COLUMNS WHERE TABLE_NAME LIKE '{". db_escape_table($table) ."}' AND COLUMN_NAME LIKE '". db_escape_table($value) ."'";
+  }
+  return db_result(db_query(implode(' INTERSECT ', $queries))) ? TRUE : FALSE;
+}
+
+/**
+ * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
+ * the SELECT list entry of the given query and the resulting query is returned.
+ * This function only applies the wrapper if a DISTINCT doesn't already exist in
+ * the query.
+ *
+ * @param $table Table containing the field to set as DISTINCT
+ * @param $field Field to set as DISTINCT
+ * @param $query Query to apply the wrapper to
+ * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ */
+function db_distinct_field($table, $field, $query) {
+  $field_to_select = 'DISTINCT (['. $table .'].['. $field .'])';
+  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+  $query = preg_replace('/(SELECT.*)(?:\['. $table .'\]\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(\['. $table .'\]\.)\['. $field .'\](.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+  $query = preg_replace('/(ORDER BY )(?!\['. $table .'\]\.\['. $field .'\])/', '\1'."[$table].[$field], ", $query);
+  return $query;
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/common.postgresql.inc
===================================================================
RCS file: includes/common.postgresql.inc
diff -N includes/common.postgresql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/common.postgresql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,399 @@
+<?php
+// $Id: common.postgresql.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Functions shared between pgsql and pdo_pgsql database engines.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * Indicates the string to use to quote identifiers and names.
+ */
+define('DB_QUOTE_OPERATOR', '"');
+
+/**
+ * Indicates the concatenation operator.
+ */
+define('DB_CONCAT_OPERATOR', '||');
+
+/**
+ * Indicates the name of the SQL strtoupper function.
+ */
+define('DB_UPPER', 'UPPER');
+
+/**
+ * Indicates the SQL to generate a random number between 0.00 and 1.00.
+ */
+define('DB_RAND', 'RANDOM()');
+
+/**
+ * Indicates the name of the SQL strlen function.
+ */
+define('DB_STRLEN', 'LENGTH');
+
+/**
+ * Indicates the name of the SQL substr function.
+ */
+define('DB_SUBSTR', 'SUBSTRING');
+
+/**
+ * Replace all escape characters in a query, based on the database specific
+ * implementation.
+ *
+ * Queries sent to Drupal should wrap all identifiers and names in square
+ * brackets. This function will search for this syntax and replace it as
+ * corresponding escape characters, based on the database specific
+ * requirement.
+ */
+function db_escape_quote($sql) {
+  return preg_replace('/\[([A-Za-z0-9_]+)\]/', DB_QUOTE_OPERATOR .'\1'. DB_QUOTE_OPERATOR, $sql);
+}
+
+/**
+ * Return a portably concatenate strings.
+ *
+ * @param ...
+ *   Variable number of string parameters.
+ * @return
+ *   Portably concatenate strings.
+ */
+function db_concat() {
+  $args = func_get_args();
+  return implode(DB_CONCAT_OPERATOR, $args);
+}
+
+/**
+ * Returns a string that is the equivalent of MySQL IFNULL or Oracle NVL.
+ *
+ * @return
+ *   If $expr1 is not NULL, returns $expr1; otherwise it returns $expr2.
+ */
+function db_if_null($expr1, $expr2) {
+  return " COALESCE($expr1, $expr2) ";
+}
+
+/**
+ * Report database status.
+ */
+function db_status_report() {
+  $t = get_t();
+
+  $version = db_version();
+
+  $form['postgresql'] = array(
+    'title' => $t('PostgreSQL database'),
+    'value' => $version,
+  );
+
+  if (version_compare($version, DRUPAL_MINIMUM_POSTGRESQL) < 0) {
+    $form['postgresql']['severity'] = REQUIREMENT_ERROR;
+    $form['postgresql']['description'] = $t('Your PostgreSQL Server is too old. Drupal requires at least PostgreSQL %version.', array('%version' => DRUPAL_MINIMUM_POSTGRESQL));
+  }
+
+  return $form;
+}
+
+/**
+ * Returns the version of the database server currently in use.
+ *
+ * @return Database server version
+ */
+function db_version() {
+  return db_result(db_query("SHOW SERVER_VERSION"));
+}
+
+/**
+ * Insert a row of record into database.
+ *
+ * @param $table
+ *   Table to insert.
+ * @param $values
+ *   An array containing the insert values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_insert($table, $values) {
+  $fields = array();
+  $placeholders = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = $value['field'];
+    $placeholders[] = $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "INSERT INTO [{". $table ."}] ([". implode('], [', $fields) ."]) VALUES (". implode(', ', $placeholders) .")";
+  return db_query($query, $data);
+}
+
+/**
+ * Update a row of record in database.
+ *
+ * @param $table
+ *   Table to update.
+ * @param $values
+ *   An array containing the update values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_update($table, $values, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 3);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $fields = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = '['. $value['field'] .'] = '. $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "UPDATE [{". $table ."}] SET ". implode(', ', $fields);
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = array_merge($data, $args);
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Delete a row of record from database.
+ *
+ * @param $table
+ *   Table to delete.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_delete($table, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 2);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $data = array();
+
+  $query = "DELETE FROM [{". $table ."}]";
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = $args;
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Returns the last insert id. This function is thread safe.
+ *
+ * @param $table
+ *   The name of the table you inserted into.
+ * @param $field
+ *   The name of the autoincrement field.
+ */
+function db_last_insert_id($table, $field) {
+  return db_result(db_query("SELECT CURRVAL('{". db_escape_table($table) ."}_". db_escape_table($field) ."_seq')"));
+}
+
+/**
+ * Runs a limited-range query in the active database.
+ *
+ * Use this as a substitute for db_query() when a subset of the query
+ * is to be returned.
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $from
+ *   The first result row to return.
+ * @param $count
+ *   The maximum number of result rows to return.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_range($query) {
+  $args = func_get_args();
+  $count = array_pop($args);
+  $from = array_pop($args);
+  array_shift($args);
+
+  $query .= ' LIMIT '. (int) $count .' OFFSET '. (int) $from;
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Runs a SELECT query and stores its results in a temporary table.
+ *
+ * Use this as a substitute for db_query() when the results need to stored
+ * in a temporary table. Temporary tables exist for the duration of the page
+ * request.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * Note that if you need to know how many results were returned, you should do
+ * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
+ * not give consistent result across different database types in this case.
+ *
+ * @param $query
+ *   A string containing a normal SELECT SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $table
+ *   The name of the temporary table to select into. This name will not be
+ *   prefixed as there is no risk of collision.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_temporary($query) {
+  $args = func_get_args();
+  $tablename = array_pop($args);
+  array_shift($args);
+
+  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' AS SELECT', $query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Lock a table.
+ * This function automatically starts a transaction.
+ */
+function db_lock_table($table) {
+  db_query('LOCK TABLE [{'. db_escape_table($table) .'}] IN EXCLUSIVE MODE');
+}
+
+/**
+ * Unlock all locked tables.
+ * This function automatically commits a transaction.
+ */
+function db_unlock_tables() {
+  db_query('COMMIT');
+}
+
+/**
+ * Check if a table exists.
+ */
+function db_table_exists($table) {
+  return (bool) db_result(db_query("SELECT COUNT(*) FROM [pg_class] WHERE [relname] = '{". db_escape_table($table) ."}'"));
+}
+
+/**
+ * Check if a column exists in the given table.
+ */
+function db_column_exists($table, $column) {
+  return (bool) db_result(db_query("SELECT COUNT([pg_attribute].[attname]) FROM [pg_class], [pg_attribute] WHERE [pg_attribute].[attrelid] = [pg_class].[oid] AND [pg_class].[relname] = '{". db_escape_table($table) ."}' AND [attname] = '". db_escape_table($column) ."'"));
+}
+
+/**
+ * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
+ * the SELECT list entry of the given query and the resulting query is returned.
+ * This function only applies the wrapper if a DISTINCT doesn't already exist in
+ * the query.
+ *
+ * @param $table Table containing the field to set as DISTINCT
+ * @param $field Field to set as DISTINCT
+ * @param $query Query to apply the wrapper to
+ * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ */
+function db_distinct_field($table, $field, $query) {
+  $field_to_select = 'DISTINCT ON (['. $table .'].['. $field ."]) [$table].[$field]";
+  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+  $query = preg_replace('/(SELECT.*)(?:\['. $table .'\]\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(\['. $table .'\]\.)\['. $field .'\](.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+  $query = preg_replace('/(ORDER BY )(?!\['. $table .'\]\.\['. $field .'\])/', '\1'."[$table].[$field], ", $query);
+  return $query;
+}
+
+/**
+ * Verify if the database is set up correctly.
+ */
+function db_check_setup() {
+  $t = get_t();
+
+  $encoding = db_result(db_query('SHOW server_encoding'));
+  if (!in_array(strtolower($encoding), array('unicode', 'utf8'))) {
+    drupal_set_message($t('Your PostgreSQL database is set up with the wrong character encoding (%encoding). It is possible it will not work as expected. It is advised to recreate it with UTF-8/Unicode encoding. More information can be found in the <a href="@url">PostgreSQL documentation</a>.', array('%encoding' => $encoding, '@url' => 'http://www.postgresql.org/docs/7.4/interactive/multibyte.html')), 'status');
+  }
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/common.sqlite.inc
===================================================================
RCS file: includes/common.sqlite.inc
diff -N includes/common.sqlite.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/common.sqlite.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,393 @@
+<?php
+// $Id: common.sqlite.inc,v 1.1 2008/02/03 10:08:54 hswong3i Exp $
+
+/**
+ * @file
+ * Functions shared between sqlite and pdo_sqlite database engines.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+/**
+ * Indicates the string to use to quote identifiers and names.
+ */
+define('DB_QUOTE_OPERATOR', '"');
+
+/**
+ * Indicates the concatenation operator.
+ */
+define('DB_CONCAT_OPERATOR', '||');
+
+/**
+ * Indicates the name of the SQL strtoupper function.
+ */
+define('DB_UPPER', 'UPPER');
+
+/**
+ * Indicates the SQL to generate a random number between 0.00 and 1.00.
+ */
+define('DB_RAND', 'ABS(RANDOM()%10000001.0/10000000.0)');
+
+/**
+ * Indicates the name of the SQL strlen function.
+ */
+define('DB_STRLEN', 'LENGTH');
+
+/**
+ * Indicates the name of the SQL substr function.
+ */
+define('DB_SUBSTR', 'SUBSTR');
+
+/**
+ * Replace all escape characters in a query, based on the database specific
+ * implementation.
+ *
+ * Queries sent to Drupal should wrap all identifiers and names in square
+ * brackets. This function will search for this syntax and replace it as
+ * corresponding escape characters, based on the database specific
+ * requirement.
+ */
+function db_escape_quote($sql) {
+  return preg_replace('/\[([A-Za-z0-9_]+)\]/', DB_QUOTE_OPERATOR .'\1'. DB_QUOTE_OPERATOR, $sql);
+}
+
+/**
+ * Return a portably concatenate strings.
+ *
+ * @param ...
+ *   Variable number of string parameters.
+ * @return
+ *   Portably concatenate strings.
+ */
+function db_concat() {
+  $args = func_get_args();
+  return implode(DB_CONCAT_OPERATOR, $args);
+}
+
+/**
+ * Returns a string that is the equivalent of MySQL IFNULL or Oracle NVL.
+ *
+ * @return
+ *   If $expr1 is not NULL, returns $expr1; otherwise it returns $expr2.
+ */
+function db_if_null($expr1, $expr2) {
+  return " IFNULL($expr1, $expr2) ";
+}
+
+/**
+ * Report database status.
+ */
+function db_status_report() {
+  $t = get_t();
+
+  $version = db_version();
+
+  $form['sqlite'] = array(
+    'title' => $t('SQLite database'),
+    'value' => $version,
+  );
+
+  if (version_compare($version, DRUPAL_MINIMUM_SQLITE) < 0) {
+    $form['sqlite']['severity'] = REQUIREMENT_ERROR;
+    $form['sqlite']['description'] = $t('Your SQLite Server is too old. Drupal requires at least SQLite %version.', array('%version' => DRUPAL_MINIMUM_SQLITE));
+  }
+
+  return $form;
+}
+
+/**
+ * Returns the version of the database server currently in use.
+ *
+ * @return Database server version
+ */
+function db_version() {
+  return db_result(db_query("SELECT SQLITE_VERSION()"));
+}
+
+/**
+ * Insert a row of record into database.
+ *
+ * @param $table
+ *   Table to insert.
+ * @param $values
+ *   An array containing the insert values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_insert($table, $values) {
+  $fields = array();
+  $placeholders = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = $value['field'];
+    $placeholders[] = $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "INSERT INTO [{". $table ."}] ([". implode('], [', $fields) ."]) VALUES (". implode(', ', $placeholders) .")";
+  return db_query($query, $data);
+}
+
+/**
+ * Update a row of record in database.
+ *
+ * @param $table
+ *   Table to update.
+ * @param $values
+ *   An array containing the update values. Each element of the array
+ *   should be an associatie array with the following keys:
+ *   - "field": The database field represented in the table column.
+ *   - "placeholder": The placeholder of the table column, using printf()
+ *     syntax. Valid %-modifiers are: %d, %f, %s and %b.
+ *   - "data": The data to insert into the table column.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_update($table, $values, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 3);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $fields = array();
+  $data = array();
+  foreach ($values as $value) {
+    $fields[] = '['. $value['field'] .'] = '. $value['placeholder'];
+    $data[] = $value['data'];
+  }
+
+  if (!count($fields)) {
+    return FALSE;
+  }
+
+  $query = "UPDATE [{". $table ."}] SET ". implode(', ', $fields);
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = array_merge($data, $args);
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Delete a row of record from database.
+ *
+ * @param $table
+ *   Table to delete.
+ * @param $where_clause
+ *   A string containing an update condition query (where clause).
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   WHERE condition, using printf() syntax. Instead of a variable number
+ *   of query arguments, you may also pass a single array containing the
+ *   query arguments.
+ *
+ *   Valid %-modifiers are: %d, %f and %s.
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query_delete($table, $where_clause = NULL) {
+  $args = func_get_args();
+  $args = array_slice($args, 2);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+
+  $data = array();
+
+  $query = "DELETE FROM [{". $table ."}]";
+  if ($where_clause) {
+    $query .= " WHERE ". $where_clause;
+    $data = $args;
+  }
+  return db_query($query, $data);
+}
+
+/**
+ * Returns the last insert id. This function is thread safe.
+ *
+ * @param $table
+ *   The name of the table you inserted into.
+ * @param $field
+ *   The name of the autoincrement field.
+ */
+function db_last_insert_id($table, $field) {
+  return db_result(db_query("SELECT LAST_INSERT_ROWID()"));
+}
+
+/**
+ * Runs a limited-range query in the active database.
+ *
+ * Use this as a substitute for db_query() when a subset of the query
+ * is to be returned.
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $from
+ *   The first result row to return.
+ * @param $count
+ *   The maximum number of result rows to return.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_range($query) {
+  $args = func_get_args();
+  $count = array_pop($args);
+  $from = array_pop($args);
+  array_shift($args);
+
+  $query .= ' LIMIT '. (int) $count .' OFFSET '. (int) $from;
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Runs a SELECT query and stores its results in a temporary table.
+ *
+ * Use this as a substitute for db_query() when the results need to stored
+ * in a temporary table. Temporary tables exist for the duration of the page
+ * request.
+ * User-supplied arguments to the query should be passed in as separate parameters
+ * so that they can be properly escaped to avoid SQL injection attacks.
+ *
+ * Note that if you need to know how many results were returned, you should do
+ * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
+ * not give consistent result across different database types in this case.
+ *
+ * @param $query
+ *   A string containing a normal SELECT SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. The query arguments can be enclosed in one
+ *   array instead.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @param $table
+ *   The name of the temporary table to select into. This name will not be
+ *   prefixed as there is no risk of collision.
+ * @return
+ *   A database query result resource, or FALSE if the query was not executed
+ *   correctly.
+ */
+function db_query_temporary($query) {
+  $args = func_get_args();
+  $tablename = array_pop($args);
+  array_shift($args);
+
+  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' AS SELECT', $query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  return db_query($query, $args);
+}
+
+/**
+ * Lock a table.
+ * This function automatically starts a transaction.
+ */
+function db_lock_table($table) {
+  db_query('BEGIN');
+}
+
+/**
+ * Unlock all locked tables.
+ * This function automatically commits a transaction.
+ */
+function db_unlock_tables() {
+  db_query('COMMIT');
+}
+
+/**
+ * Check if a table exists.
+ */
+function db_table_exists($table) {
+  return (bool) db_result(db_query("SELECT COUNT(*) FROM SQLITE_MASTER WHERE TBL_NAME LIKE '{". db_escape_table($table) ."}'"));
+}
+
+/**
+ * Check if a column exists in the given table.
+ */
+function db_column_exists($table, $column) {
+  $result = db_query("PRAGMA TABLE_INFO('{". db_escape_table($table) ."}')");
+  while ($column = db_fetch_array($result)) {
+    if ($column['name'] == $column) {
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
+ * the SELECT list entry of the given query and the resulting query is returned.
+ * This function only applies the wrapper if a DISTINCT doesn't already exist in
+ * the query.
+ *
+ * @param $table Table containing the field to set as DISTINCT
+ * @param $field Field to set as DISTINCT
+ * @param $query Query to apply the wrapper to
+ * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ */
+function db_distinct_field($table, $field, $query) {
+  $field_to_select = 'DISTINCT ON (['. $table .'].['. $field ."]) [$table].[$field]";
+  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
+  $query = preg_replace('/(SELECT.*)(?:\['. $table .'\]\.|\s)(?<!DISTINCT\()(?<!DISTINCT\(\['. $table .'\]\.)\['. $field .'\](.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+  $query = preg_replace('/(ORDER BY )(?!\['. $table .'\]\.\['. $field .'\])/', '\1'."[$table].[$field], ", $query);
+  return $query;
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.inc,v
retrieving revision 1.92.2.1
diff -u -p -r1.92.2.1 database.inc
--- includes/database.inc	8 Feb 2008 22:44:59 -0000	1.92.2.1
+++ includes/database.inc	3 Apr 2008 07:55:01 -0000
@@ -122,7 +122,7 @@ function db_prefix_tables($sql) {
  * @return the name of the previously active database or FALSE if non was found.
  */
 function db_set_active($name = 'default') {
-  global $db_url, $db_type, $active_db;
+  global $db_url, $db_prefix, $db_type, $active_db;
   static $db_conns, $active_name = FALSE;
 
   if (empty($db_url)) {
@@ -132,21 +132,25 @@ function db_set_active($name = 'default'
 
   if (!isset($db_conns[$name])) {
     // Initiate a new connection, using the named DB URL specified.
-    if (is_array($db_url)) {
-      $connect_url = array_key_exists($name, $db_url) ? $db_url[$name] : $db_url['default'];
+    if (array_key_exists($name, $db_url)) {
+      $connect_url = $db_url[$name];
+    }
+    elseif (array_key_exists('default', $db_url)) {
+      $connect_url = $db_url['default'];
     }
     else {
       $connect_url = $db_url;
     }
 
-    $db_type = substr($connect_url, 0, strpos($connect_url, '://'));
+    $db_type = $connect_url['db_type'];
+    $db_prefix = $connect_url['db_prefix'];
     $handler = "./includes/database.$db_type.inc";
 
     if (is_file($handler)) {
       include_once $handler;
     }
     else {
-      _db_error_page("The database type '". $db_type ."' is unsupported. Please use either 'mysql' or 'mysqli' for MySQL, or 'pgsql' for PostgreSQL databases.");
+      _db_error_page("The database type '". $db_type ."' is unsupported. Please use either 'mysql', 'mysqli' or 'pdo_mysql' for MySQL; 'pgsql' or 'pdo_pgsql' for PostgreSQL databases; 'oci8' or 'pdo_oci' for Oracle databases; 'ibm_db2' or 'pdo_ibm' for IBM DB2 databases; 'pdo_sqlite' for SQLite databases.");
     }
 
     $db_conns[$name] = db_connect($connect_url);
@@ -199,23 +203,28 @@ function db_is_active() {
  * Helper function for db_query().
  */
 function _db_query_callback($match, $init = FALSE) {
-  static $args = NULL;
+  static $args = NULL, $ident = NULL, $count = 0;
   if ($init) {
-    $args = $match;
-    return;
+    if ($match) {
+      $count = 0;
+      $ident = substr(md5($match['query']), 1, 8);
+      $args = array_values($match['args']);
+      return;
+    }
+    return $args;
   }
 
+  $current = $count++;
+  $locator = ":l". $ident . $current;
   switch ($match[1]) {
-    case '%d': // We must use type casting to int to convert FALSE/NULL/(TRUE?)
-      return (int) array_shift($args); // We don't need db_escape_string as numbers are db-safe
-    case '%s':
-      return db_escape_string(array_shift($args));
-    case '%%':
-      return '%';
+    case '%d':
+      return db_escape_decimal($args[$current], $locator);
     case '%f':
-      return (float) array_shift($args);
-    case '%b': // binary data
-      return db_encode_blob(array_shift($args));
+      return db_escape_float($args[$current], $locator);
+    case '%s':
+      return db_escape_string($args[$current], $locator);
+    case '%b': // Binary Large OBject.
+      return db_encode_blob($args[$current], $locator);
   }
 }
 
@@ -238,7 +247,7 @@ function db_placeholders($arguments, $ty
 /**
  * Indicates the place holders that should be replaced in _db_query_callback().
  */
-define('DB_QUERY_REGEXP', '/(%d|%s|%%|%f|%b)/');
+define('DB_QUERY_REGEXP', '/(%d|%f|%s|%b)/');
 
 /**
  * Helper function for db_rewrite_sql.
@@ -260,7 +269,7 @@ define('DB_QUERY_REGEXP', '/(%d|%s|%%|%f
  * @return
  *   An array: join statements, where statements, field or DISTINCT(field).
  */
-function _db_rewrite_sql($query = '', $primary_table = 'n', $primary_field = 'nid', $args = array()) {
+function _db_rewrite_sql($query = '', $primary_table = 'n', $primary_field = '[nid]', $args = array()) {
   $where = array();
   $join = array();
   $distinct = FALSE;
@@ -307,7 +316,7 @@ function _db_rewrite_sql($query = '', $p
  *   The original query with JOIN and WHERE statements inserted from
  *   hook_db_rewrite_sql implementations. nid is rewritten if needed.
  */
-function db_rewrite_sql($query, $primary_table = 'n', $primary_field = 'nid',  $args = array()) {
+function db_rewrite_sql($query, $primary_table = 'n', $primary_field = '[nid]',  $args = array()) {
   list($join, $where, $distinct) = _db_rewrite_sql($query, $primary_table, $primary_field, $args);
 
   if ($distinct) {
@@ -363,7 +372,7 @@ function db_rewrite_sql($query, $primary
       $query .= " $join WHERE $where";
     }
     else {
-      $query = substr($query, 0, -$pos) . " $join WHERE $where " . substr($query, -$pos);
+      $query = substr($query, 0, -$pos) ." $join WHERE $where ". substr($query, -$pos);
     }
   }
 
@@ -551,15 +560,7 @@ function db_type_placeholder($type) {
     case 'char':
     case 'text':
     case 'datetime':
-      return '\'%s\'';
-
     case 'numeric':
-      // For 'numeric' values, we use '%s', not '\'%s\'' as with
-      // string types, because numeric values should not be enclosed
-      // in quotes in queries (though they can be, at least on mysql
-      // and pgsql).  Numerics should only have [0-9.+-] and
-      // presumably no db's "escape string" function will mess with
-      // those characters.
       return '%s';
 
     case 'serial':
Index: includes/database.mysql-common.inc
===================================================================
RCS file: includes/database.mysql-common.inc
diff -N includes/database.mysql-common.inc
--- includes/database.mysql-common.inc	30 Jan 2008 14:34:29 -0000	1.17
+++ /dev/null	1 Jan 1970 00:00:00 -0000
@@ -1,533 +0,0 @@
-<?php
-// $Id: database.mysql-common.inc,v 1.17 2008/01/30 14:34:29 goba Exp $
-
-/**
- * @file
- * Functions shared between mysql and mysqli database engines.
- */
-
-/**
- * Runs a basic query in the active database.
- *
- * User-supplied arguments to the query should be passed in as separate
- * parameters so that they can be properly escaped to avoid SQL injection
- * attacks.
- *
- * @param $query
- *   A string containing an SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. Instead of a variable number of query arguments,
- *   you may also pass a single array containing the query arguments.
- *
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
- *
- * @return
- *   A database query result resource, or FALSE if the query was not
- *   executed correctly.
- */
-function db_query($query) {
-  $args = func_get_args();
-  array_shift($args);
-  $query = db_prefix_tables($query);
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  return _db_query($query);
-}
-
-/**
- * @ingroup schemaapi
- * @{
- */
-
-/**
- * Generate SQL to create a new table from a Drupal schema definition.
- *
- * @param $name
- *   The name of the table to create.
- * @param $table
- *   A Schema API table definition array.
- * @return
- *   An array of SQL statements to create the table.
- */
-function db_create_table_sql($name, $table) {
-
-  if (empty($table['mysql_suffix'])) {
-    $table['mysql_suffix'] = "/*!40100 DEFAULT CHARACTER SET UTF8 */";
-  }
-
-  $sql = "CREATE TABLE {". $name ."} (\n";
-
-  // Add the SQL statement for each field.
-  foreach ($table['fields'] as $field_name => $field) {
-    $sql .= _db_create_field_sql($field_name, _db_process_field($field)) .", \n";
-  }
-
-  // Process keys & indexes.
-  $keys = _db_create_keys_sql($table);
-  if (count($keys)) {
-    $sql .= implode(", \n", $keys) .", \n";
-  }
-
-  // Remove the last comma and space.
-  $sql = substr($sql, 0, -3) ."\n) ";
-
-  $sql .= $table['mysql_suffix'];
-
-  return array($sql);
-}
-
-function _db_create_keys_sql($spec) {
-  $keys = array();
-
-  if (!empty($spec['primary key'])) {
-    $keys[] = 'PRIMARY KEY ('. _db_create_key_sql($spec['primary key']) .')';
-  }
-  if (!empty($spec['unique keys'])) {
-    foreach ($spec['unique keys'] as $key => $fields) {
-      $keys[] = 'UNIQUE KEY '. $key .' ('. _db_create_key_sql($fields) .')';
-    }
-  }
-  if (!empty($spec['indexes'])) {
-    foreach ($spec['indexes'] as $index => $fields) {
-      $keys[] = 'INDEX '. $index .' ('. _db_create_key_sql($fields) .')';
-    }
-  }
-
-  return $keys;
-}
-
-function _db_create_key_sql($fields) {
-  $ret = array();
-  foreach ($fields as $field) {
-    if (is_array($field)) {
-      $ret[] = $field[0] .'('. $field[1] .')';
-    }
-    else {
-      $ret[] = $field;
-    }
-  }
-  return implode(', ', $ret);
-}
-
-/**
- * Set database-engine specific properties for a field.
- *
- * @param $field
- *   A field description array, as specified in the schema documentation.
- */
-function _db_process_field($field) {
-
-  if (!isset($field['size'])) {
-    $field['size'] = 'normal';
-  }
-
-  // Set the correct database-engine specific datatype.
-  if (!isset($field['mysql_type'])) {
-    $map = db_type_map();
-    $field['mysql_type'] = $map[$field['type'] .':'. $field['size']];
-  }
-
-  if ($field['type'] == 'serial') {
-    $field['auto_increment'] = TRUE;
-  }
-
-  return $field;
-}
-
-/**
- * Create an SQL string for a field to be used in table creation or alteration.
- *
- * Before passing a field out of a schema definition into this function it has
- * to be processed by _db_process_field().
- *
- * @param $name
- *    Name of the field.
- * @param $spec
- *    The field specification, as per the schema data structure format.
- */
-function _db_create_field_sql($name, $spec) {
-  $sql = "`". $name ."` ". $spec['mysql_type'];
-
-  if (isset($spec['length'])) {
-    $sql .= '('. $spec['length'] .')';
-  }
-  elseif (isset($spec['precision']) && isset($spec['scale'])) {
-    $sql .= '('. $spec['scale'] .', '. $spec['precision'] .')';
-  }
-
-  if (!empty($spec['unsigned'])) {
-    $sql .= ' unsigned';
-  }
-
-  if (!empty($spec['not null'])) {
-    $sql .= ' NOT NULL';
-  }
-
-  if (!empty($spec['auto_increment'])) {
-    $sql .= ' auto_increment';
-  }
-
-  if (isset($spec['default'])) {
-    if (is_string($spec['default'])) {
-      $spec['default'] = "'". $spec['default'] ."'";
-    }
-    $sql .= ' DEFAULT '. $spec['default'];
-  }
-
-  if (empty($spec['not null']) && !isset($spec['default'])) {
-    $sql .= ' DEFAULT NULL';
-  }
-
-  return $sql;
-}
-
-/**
- * This maps a generic data type in combination with its data size
- * to the engine-specific data type.
- */
-function db_type_map() {
-  // Put :normal last so it gets preserved by array_flip.  This makes
-  // it much easier for modules (such as schema.module) to map
-  // database types back into schema types.
-  $map = array(
-    'varchar:normal'  => 'VARCHAR',
-    'char:normal'     => 'CHAR',
-
-    'text:tiny'       => 'TINYTEXT',
-    'text:small'      => 'TINYTEXT',
-    'text:medium'     => 'MEDIUMTEXT',
-    'text:big'        => 'LONGTEXT',
-    'text:normal'     => 'TEXT',
-
-    'serial:tiny'     => 'TINYINT',
-    'serial:small'    => 'SMALLINT',
-    'serial:medium'   => 'MEDIUMINT',
-    'serial:big'      => 'BIGINT',
-    'serial:normal'   => 'INT',
-
-    'int:tiny'        => 'TINYINT',
-    'int:small'       => 'SMALLINT',
-    'int:medium'      => 'MEDIUMINT',
-    'int:big'         => 'BIGINT',
-    'int:normal'      => 'INT',
-
-    'float:tiny'      => 'FLOAT',
-    'float:small'     => 'FLOAT',
-    'float:medium'    => 'FLOAT',
-    'float:big'       => 'DOUBLE',
-    'float:normal'    => 'FLOAT',
-
-    'numeric:normal'  => 'DECIMAL',
-
-    'blob:big'        => 'LONGBLOB',
-    'blob:normal'     => 'BLOB',
-
-    'datetime:normal' => 'DATETIME',
-  );
-  return $map;
-}
-
-/**
- * Rename a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be renamed.
- * @param $new_name
- *   The new name for the table.
- */
-function db_rename_table(&$ret, $table, $new_name) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} RENAME TO {'. $new_name .'}');
-}
-
-/**
- * Drop a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be dropped.
- */
-function db_drop_table(&$ret, $table) {
-  $ret[] = update_sql('DROP TABLE {'. $table .'}');
-}
-
-/**
- * Add a new field to a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   Name of the table to be altered.
- * @param $field
- *   Name of the field to be added.
- * @param $spec
- *   The field specification array, as taken from a schema definition.
- *   The specification may also contain the key 'initial', the newly
- *   created field will be set to the value of the key in all rows.
- *   This is most useful for creating NOT NULL columns with no default
- *   value in existing tables.
- * @param $keys_new
- *   Optional keys and indexes specification to be created on the
- *   table along with adding the field. The format is the same as a
- *   table specification but without the 'fields' element.  If you are
- *   adding a type 'serial' field, you MUST specify at least one key
- *   or index including it in this array. @see db_change_field for more
- *   explanation why.
- */
-function db_add_field(&$ret, $table, $field, $spec, $keys_new = array()) {
-  $fixnull = FALSE;
-  if (!empty($spec['not null']) && !isset($spec['default'])) {
-    $fixnull = TRUE;
-    $spec['not null'] = FALSE;
-  }
-  $query = 'ALTER TABLE {'. $table .'} ADD ';
-  $query .= _db_create_field_sql($field, _db_process_field($spec));
-  if (count($keys_new)) {
-    $query .= ', ADD '. implode(', ADD ', _db_create_keys_sql($keys_new));
-  }
-  $ret[] = update_sql($query);
-  if (isset($spec['initial'])) {
-    // All this because update_sql does not support %-placeholders.
-    $sql = 'UPDATE {'. $table .'} SET '. $field .' = '. db_type_placeholder($spec['type']);
-    $result = db_query($sql, $spec['initial']);
-    $ret[] = array('success' => $result !== FALSE, 'query' => check_plain($sql .' ('. $spec['initial'] .')'));
-  }
-  if ($fixnull) {
-    $spec['not null'] = TRUE;
-    db_change_field($ret, $table, $field, $field, $spec);
-  }
-}
-
-/**
- * Drop a field.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be dropped.
- */
-function db_drop_field(&$ret, $table, $field) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP '. $field);
-}
-
-/**
- * Set the default value for a field.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be altered.
- * @param $default
- *   Default value to be set. NULL for 'default NULL'.
- */
-function db_field_set_default(&$ret, $table, $field, $default) {
-  if ($default == NULL) {
-    $default = 'NULL';
-  }
-  else {
-    $default = is_string($default) ? "'$default'" : $default;
-  }
-
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ALTER COLUMN '. $field .' SET DEFAULT '. $default);
-}
-
-/**
- * Set a field to have no default value.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be altered.
- */
-function db_field_set_no_default(&$ret, $table, $field) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ALTER COLUMN '. $field .' DROP DEFAULT');
-}
-
-/**
- * Add a primary key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $fields
- *   Fields for the primary key.
- */
-function db_add_primary_key(&$ret, $table, $fields) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ADD PRIMARY KEY ('.
-    _db_create_key_sql($fields) .')');
-}
-
-/**
- * Drop the primary key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- */
-function db_drop_primary_key(&$ret, $table) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP PRIMARY KEY');
-}
-
-/**
- * Add a unique key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the key.
- * @param $fields
- *   An array of field names.
- */
-function db_add_unique_key(&$ret, $table, $name, $fields) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ADD UNIQUE KEY '.
-    $name .' ('. _db_create_key_sql($fields) .')');
-}
-
-/**
- * Drop a unique key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the key.
- */
-function db_drop_unique_key(&$ret, $table, $name) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP KEY '. $name);
-}
-
-/**
- * Add an index.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the index.
- * @param $fields
- *   An array of field names.
- */
-function db_add_index(&$ret, $table, $name, $fields) {
-  $query = 'ALTER TABLE {'. $table .'} ADD INDEX '. $name .' ('. _db_create_key_sql($fields) .')';
-  $ret[] = update_sql($query);
-}
-
-/**
- * Drop an index.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the index.
- */
-function db_drop_index(&$ret, $table, $name) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP INDEX '. $name);
-}
-
-/**
- * Change a field definition.
- *
- * IMPORTANT NOTE: To maintain database portability, you have to explicitly
- * recreate all indices and primary keys that are using the changed field.
- *
- * That means that you have to drop all affected keys and indexes with
- * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
- * To recreate the keys and indices, pass the key definitions as the
- * optional $keys_new argument directly to db_change_field().
- *
- * For example, suppose you have:
- * @code
- * $schema['foo'] = array(
- *   'fields' => array(
- *     'bar' => array('type' => 'int', 'not null' => TRUE)
- *   ),
- *   'primary key' => array('bar')
- * );
- * @endcode
- * and you want to change foo.bar to be type serial, leaving it as the
- * primary key.  The correct sequence is:
- * @code
- * db_drop_primary_key($ret, 'foo');
- * db_change_field($ret, 'foo', 'bar', 'bar',
- *   array('type' => 'serial', 'not null' => TRUE),
- *   array('primary key' => array('bar')));
- * @endcode
- *
- * The reasons for this are due to the different database engines:
- *
- * On PostgreSQL, changing a field definition involves adding a new field
- * and dropping an old one which* causes any indices, primary keys and
- * sequences (from serial-type fields) that use the changed field to be dropped.
- *
- * On MySQL, all type 'serial' fields must be part of at least one key
- * or index as soon as they are created.  You cannot use
- * db_add_{primary_key,unique_key,index}() for this purpose because
- * the ALTER TABLE command will fail to add the column without a key
- * or index specification.  The solution is to use the optional
- * $keys_new argument to create the key or index at the same time as
- * field.
- *
- * You could use db_add_{primary_key,unique_key,index}() in all cases
- * unless you are converting a field to be type serial. You can use
- * the $keys_new argument in all cases.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   Name of the table.
- * @param $field
- *   Name of the field to change.
- * @param $field_new
- *   New name for the field (set to the same as $field if you don't want to change the name).
- * @param $spec
- *   The field specification for the new field.
- * @param $keys_new
- *   Optional keys and indexes specification to be created on the
- *   table along with changing the field. The format is the same as a
- *   table specification but without the 'fields' element.
- */
-
-function db_change_field(&$ret, $table, $field, $field_new, $spec, $keys_new = array()) {
-  $sql = 'ALTER TABLE {'. $table .'} CHANGE '. $field .' '.
-    _db_create_field_sql($field_new, _db_process_field($spec));
-  if (count($keys_new)) {
-    $sql .= ', ADD '. implode(', ADD ', _db_create_keys_sql($keys_new));
-  }
-  $ret[] = update_sql($sql);
-}
-
-/**
- * Returns the last insert id.
- *
- * @param $table
- *   The name of the table you inserted into.
- * @param $field
- *   The name of the autoincrement field.
- */
-function db_last_insert_id($table, $field) {
-  return db_result(db_query('SELECT LAST_INSERT_ID()'));
-}
Index: includes/database.mysql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.mysql.inc,v
retrieving revision 1.89
diff -u -p -r1.89 database.mysql.inc
--- includes/database.mysql.inc	24 Jan 2008 10:46:54 -0000	1.89
+++ includes/database.mysql.inc	3 Apr 2008 07:55:01 -0000
@@ -11,61 +11,24 @@
  * @{
  */
 
-// Include functions shared between mysql and mysqli.
-require_once './includes/database.mysql-common.inc';
+// Include functions shared between mysql, mysqli and pdo_mysql.
+require_once './includes/common.mysql.inc';
 
-/**
- * Report database status.
- */
-function db_status_report($phase) {
-  $t = get_t();
-
-  $version = db_version();
-
-  $form['mysql'] = array(
-    'title' => $t('MySQL database'),
-    'value' => ($phase == 'runtime') ? l($version, 'admin/reports/status/sql') : $version,
-  );
-
-  if (version_compare($version, DRUPAL_MINIMUM_MYSQL) < 0) {
-    $form['mysql']['severity'] = REQUIREMENT_ERROR;
-    $form['mysql']['description'] = $t('Your MySQL Server is too old. Drupal requires at least MySQL %version.', array('%version' => DRUPAL_MINIMUM_MYSQL));
-  }
-
-  return $form;
-}
-
-/**
- * Returns the version of the database server currently in use.
- *
- * @return Database server version
- */
-function db_version() {
-  list($version) = explode('-', mysql_get_server_info());
-  return $version;
-}
+// Include schema API shared between mysql, mysqli and pdo_mysql.
+require_once './includes/schema.mysql.inc';
 
 /**
  * Initialize a database connection.
  */
 function db_connect($url) {
-  $url = parse_url($url);
-
   // Check if MySQL support is present in PHP
-  if (!function_exists('mysql_connect')) {
-    _db_error_page('Unable to use the MySQL database because the MySQL extension for PHP is not installed. Check your <code>php.ini</code> to see how you can enable it.');
+  if (!(function_exists('mysql_connect') && extension_loaded('mysql'))) {
+    _db_error_page('Unable to use the MySQL database because the mysql extension for PHP is not installed. Check your php.ini to see how you can enable it.');
   }
 
-  // Decode url-encoded information in the db connection string
-  $url['user'] = urldecode($url['user']);
-  // Test if database url has a password.
-  $url['pass'] = isset($url['pass']) ? urldecode($url['pass']) : '';
-  $url['host'] = urldecode($url['host']);
-  $url['path'] = urldecode($url['path']);
-
   // Allow for non-standard MySQL port.
-  if (isset($url['port'])) {
-    $url['host'] = $url['host'] .':'. $url['port'];
+  if (isset($url['db_port'])) {
+    $url['db_host'] = $url['db_host'] .':'. $url['db_port'];
   }
 
   // - TRUE makes mysql_connect() always open a new link, even if
@@ -74,22 +37,61 @@ function db_connect($url) {
   //   server.
   // - 2 means CLIENT_FOUND_ROWS: return the number of found
   //   (matched) rows, not the number of affected rows.
-  $connection = @mysql_connect($url['host'], $url['user'], $url['pass'], TRUE, 2);
-  if (!$connection || !mysql_select_db(substr($url['path'], 1))) {
+  $connection = @mysql_connect($url['db_host'], $url['db_user'], $url['db_pass'], TRUE, 2);
+  if (!$connection || !mysql_select_db($url['db_name'])) {
     // Show error screen otherwise
     _db_error_page(mysql_error());
   }
 
+  // Require ANSI mode to improve SQL portability.
+  mysql_query("SET SESSION SQL_MODE = 'ANSI'", $connection);
   // Force UTF-8.
-  mysql_query('SET NAMES "utf8"', $connection);
+  mysql_query('SET NAMES "UTF8"', $connection);
   return $connection;
 }
 
 /**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  return _db_query($query);
+}
+
+/**
  * Helper function for db_query().
  */
 function _db_query($query, $debug = 0) {
-  global $active_db, $queries, $user;
+  global $active_db, $last_result, $queries, $user;
 
   if (variable_get('dev_query', 0)) {
     list($usec, $sec) = explode(' ', microtime());
@@ -105,7 +107,14 @@ function _db_query($query, $debug = 0) {
     $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
   }
 
-  $result = mysql_query($query, $active_db);
+  // Execute the statement.
+  $stmt = mysql_query($query, $active_db);
+  if (mysql_errno($active_db)) {
+    // Indicate to drupal_error_handler that this is a database error.
+    ${DB_ERROR} = TRUE;
+    trigger_error(check_plain(mysql_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
+    return FALSE;
+  }
 
   if (variable_get('dev_query', 0)) {
     $query = $bt[2]['function'] ."\n". $query;
@@ -119,15 +128,8 @@ function _db_query($query, $debug = 0) {
     print '<p>query: '. $query .'<br />error:'. mysql_error($active_db) .'</p>';
   }
 
-  if (!mysql_errno($active_db)) {
-    return $result;
-  }
-  else {
-    // Indicate to drupal_error_handler that this is a database error.
-    ${DB_ERROR} = TRUE;
-    trigger_error(check_plain(mysql_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
-    return FALSE;
-  }
+  $last_result = $stmt;
+  return $last_result;
 }
 
 /**
@@ -141,8 +143,10 @@ function _db_query($query, $debug = 0) {
  */
 function db_fetch_object($result) {
   if ($result) {
-    return mysql_fetch_object($result);
+    $object = mysql_fetch_object($result);
+    return isset($object) ? $object : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -157,8 +161,10 @@ function db_fetch_object($result) {
  */
 function db_fetch_array($result) {
   if ($result) {
-    return mysql_fetch_array($result, MYSQL_ASSOC);
+    $array = mysql_fetch_array($result, MYSQL_ASSOC);
+    return isset($array) ? $array : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -177,7 +183,7 @@ function db_result($result) {
     // The mysql_fetch_row function has an optional second parameter $row
     // but that can't be used for compatibility with Oracle, DB2, etc.
     $array = mysql_fetch_row($result);
-    return $array[0];
+    return isset($array[0]) ? $array[0] : FALSE;
   }
   return FALSE;
 }
@@ -198,172 +204,66 @@ function db_affected_rows() {
   return mysql_affected_rows($active_db);
 }
 
-/**
- * Runs a limited-range query in the active database.
- *
- * Use this as a substitute for db_query() when a subset of the query is to be
- * returned.
- * User-supplied arguments to the query should be passed in as separate parameters
- * so that they can be properly escaped to avoid SQL injection attacks.
- *
- * @param $query
- *   A string containing an SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. The query arguments can be enclosed in one
- *   array instead.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $from
- *   The first result row to return.
- * @param $count
- *   The maximum number of result rows to return.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_range($query) {
-  $args = func_get_args();
-  $count = array_pop($args);
-  $from = array_pop($args);
-  array_shift($args);
-
-  $query = db_prefix_tables($query);
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  $query .= ' LIMIT '. (int)$from .', '. (int)$count;
-  return _db_query($query);
+function db_escape_decimal($data) {
+  return (int) $data;
 }
 
 /**
- * Runs a SELECT query and stores its results in a temporary table.
- *
- * Use this as a substitute for db_query() when the results need to stored
- * in a temporary table. Temporary tables exist for the duration of the page
- * request.
- * User-supplied arguments to the query should be passed in as separate parameters
- * so that they can be properly escaped to avoid SQL injection attacks.
- *
- * Note that if you need to know how many results were returned, you should do
- * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
- * not give consistent result across different database types in this case.
- *
- * @param $query
- *   A string containing a normal SELECT SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. The query arguments can be enclosed in one
- *   array instead.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $table
- *   The name of the temporary table to select into. This name will not be
- *   prefixed as there is no risk of collision.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_temporary($query) {
-  $args = func_get_args();
-  $tablename = array_pop($args);
-  array_shift($args);
-
-  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' Engine=HEAP SELECT', db_prefix_tables($query));
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  return _db_query($query);
+function db_escape_float($data) {
+  return (float) $data;
 }
 
 /**
- * Returns a properly formatted Binary Large OBject value.
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
  * @param $data
  *   Data to encode.
  * @return
- *  Encoded data.
+ *   Encoded data.
  */
-function db_encode_blob($data) {
+function db_escape_string($data) {
   global $active_db;
   return "'". mysql_real_escape_string($data, $active_db) ."'";
 }
 
 /**
- * Returns text from a Binary Large Object value.
+ * Returns a properly formatted Binary Large OBject value.
  *
  * @param $data
- *   Data to decode.
+ *   Data to encode.
  * @return
- *  Decoded data.
- */
-function db_decode_blob($data) {
-  return $data;
-}
-
-/**
- * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *   Encoded data.
  */
-function db_escape_string($text) {
+function db_encode_blob($data) {
   global $active_db;
-  return mysql_real_escape_string($text, $active_db);
-}
-
-/**
- * Lock a table.
- */
-function db_lock_table($table) {
-  db_query('LOCK TABLES {'. db_escape_table($table) .'} WRITE');
-}
-
-/**
- * Unlock all locked tables.
- */
-function db_unlock_tables() {
-  db_query('UNLOCK TABLES');
-}
-
-/**
- * Check if a table exists.
- */
-function db_table_exists($table) {
-  return (bool) db_fetch_object(db_query("SHOW TABLES LIKE '{". db_escape_table($table) ."}'"));
-}
-
-/**
- * Check if a column exists in the given table.
- */
-function db_column_exists($table, $column) {
-  return (bool) db_fetch_object(db_query("SHOW COLUMNS FROM {". db_escape_table($table) ."} LIKE '". db_escape_table($column) ."'"));
+  return "'". mysql_real_escape_string($data, $active_db) ."'";
 }
 
 /**
- * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
- * the SELECT list entry of the given query and the resulting query is returned.
- * This function only applies the wrapper if a DISTINCT doesn't already exist in
- * the query.
+ * Returns text from a Binary Large OBject value.
  *
- * @param $table Table containing the field to set as DISTINCT
- * @param $field Field to set as DISTINCT
- * @param $query Query to apply the wrapper to
- * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
  */
-function db_distinct_field($table, $field, $query) {
-  $field_to_select = 'DISTINCT('. $table .'.'. $field .')';
-  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
-  return preg_replace('/(SELECT.*)(?:'. $table .'\.|\s)(?<!DISTINCT\()(?<!DISTINCT\('. $table .'\.)'. $field .'(.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+function db_decode_blob($data) {
+  return $data;
 }
 
 /**
Index: includes/database.mysqli.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.mysqli.inc,v
retrieving revision 1.54
diff -u -p -r1.54 database.mysqli.inc
--- includes/database.mysqli.inc	23 Jan 2008 09:59:29 -0000	1.54
+++ includes/database.mysqli.inc	3 Apr 2008 07:55:01 -0000
@@ -3,93 +3,91 @@
 
 /**
  * @file
- * Database interface code for MySQL database servers using the mysqli client libraries. mysqli is included in PHP 5 by default and allows developers to use the advanced features of MySQL 4.1.x, 5.0.x and beyond.
+ * Database interface code for MySQL database servers using the mysqli client
+ * libraries. mysqli is included in PHP 5 by default and allows developers to
+ * use the advanced features of MySQL 4.1.x, 5.0.x and beyond.
+ * Check http://www.php.net/manual/en/ref.mysqli.php for more information.
  */
 
- // Maintainers of this file should consult:
- // http://www.php.net/manual/en/ref.mysqli.php
-
 /**
  * @ingroup database
  * @{
  */
 
-// Include functions shared between mysql and mysqli.
-require_once './includes/database.mysql-common.inc';
-
-/**
- * Report database status.
- */
-function db_status_report($phase) {
-  $t = get_t();
-
-  $version = db_version();
+// Include functions shared between mysql, mysqli and pdo_mysql.
+require_once './includes/common.mysql.inc';
 
-  $form['mysql'] = array(
-    'title' => $t('MySQL database'),
-    'value' => ($phase == 'runtime') ? l($version, 'admin/reports/status/sql') : $version,
-  );
-
-  if (version_compare($version, DRUPAL_MINIMUM_MYSQL) < 0) {
-    $form['mysql']['severity'] = REQUIREMENT_ERROR;
-    $form['mysql']['description'] = $t('Your MySQL Server is too old. Drupal requires at least MySQL %version.', array('%version' => DRUPAL_MINIMUM_MYSQL));
-  }
-
-  return $form;
-}
+// Include schema API shared between mysql, mysqli and pdo_mysql.
+require_once './includes/schema.mysql.inc';
 
 /**
- * Returns the version of the database server currently in use.
- *
- * @return Database server version
- */
-function db_version() {
-  global $active_db;
-  list($version) = explode('-', mysqli_get_server_info($active_db));
-  return $version;
-}
-
-/**
- * Initialise a database connection.
+ * Initialize a database connection.
  *
  * Note that mysqli does not support persistent connections.
  */
 function db_connect($url) {
-  // Check if MySQLi support is present in PHP
-  if (!function_exists('mysqli_init') && !extension_loaded('mysqli')) {
-    _db_error_page('Unable to use the MySQLi database because the MySQLi extension for PHP is not installed. Check your <code>php.ini</code> to see how you can enable it.');
-  }
-
-  $url = parse_url($url);
-
-  // Decode url-encoded information in the db connection string
-  $url['user'] = urldecode($url['user']);
-  // Test if database url has a password.
-  $url['pass'] = isset($url['pass']) ? urldecode($url['pass']) : '';
-  $url['host'] = urldecode($url['host']);
-  $url['path'] = urldecode($url['path']);
-  if (!isset($url['port'])) {
-    $url['port'] = NULL;
+  // Check if MySQL support is present in PHP
+  if (!(function_exists('mysqli_init') && extension_loaded('mysqli'))) {
+    _db_error_page('Unable to use the MySQL database because the mysqli extension for PHP is not installed. Check your php.ini to see how you can enable it.');
   }
 
   $connection = mysqli_init();
-  @mysqli_real_connect($connection, $url['host'], $url['user'], $url['pass'], substr($url['path'], 1), $url['port'], NULL, MYSQLI_CLIENT_FOUND_ROWS);
+  @mysqli_real_connect($connection, $url['db_host'], $url['db_user'], $url['db_pass'], $url['db_name'], $url['db_port'], NULL, MYSQLI_CLIENT_FOUND_ROWS);
 
   if (mysqli_connect_errno() > 0) {
     _db_error_page(mysqli_connect_error());
   }
 
+  // Require ANSI mode to improve SQL portability.
+  mysqli_query($connection, "SET SESSION SQL_MODE = 'ANSI'");
   // Force UTF-8.
-  mysqli_query($connection, 'SET NAMES "utf8"');
+  mysqli_query($connection, 'SET NAMES "UTF8"');
 
   return $connection;
 }
 
 /**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  return _db_query($query);
+}
+
+/**
  * Helper function for db_query().
  */
 function _db_query($query, $debug = 0) {
-  global $active_db, $queries, $user;
+  global $active_db, $last_result, $queries, $user;
 
   if (variable_get('dev_query', 0)) {
     list($usec, $sec) = explode(' ', microtime());
@@ -98,14 +96,21 @@ function _db_query($query, $debug = 0) {
     // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
     // code is issueing the slow query.
     $bt = debug_backtrace();
-    // t() may not be available yet so we don't wrap 'Anonymous'
+    // t() may not be available yet so we don't wrap 'Anonymous'.
     $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
     // str_replace() to prevent SQL injection via username or anonymous name.
     $name = str_replace(array('*', '/'), '', $name);
     $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
   }
 
-  $result = mysqli_query($active_db, $query);
+  // Execute the statement.
+  $stmt = mysqli_query($active_db, $query);
+  if (mysqli_errno($active_db)) {
+    // Indicate to drupal_error_handler that this is a database error.
+    ${DB_ERROR} = TRUE;
+    trigger_error(check_plain(mysqli_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
+    return FALSE;
+  }
 
   if (variable_get('dev_query', 0)) {
     $query = $bt[2]['function'] ."\n". $query;
@@ -119,15 +124,8 @@ function _db_query($query, $debug = 0) {
     print '<p>query: '. $query .'<br />error:'. mysqli_error($active_db) .'</p>';
   }
 
-  if (!mysqli_errno($active_db)) {
-    return $result;
-  }
-  else {
-    // Indicate to drupal_error_handler that this is a database error.
-    ${DB_ERROR} = TRUE;
-    trigger_error(check_plain(mysqli_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
-    return FALSE;
-  }
+  $last_result = $stmt;
+  return $last_result;
 }
 
 /**
@@ -144,6 +142,7 @@ function db_fetch_object($result) {
     $object = mysqli_fetch_object($result);
     return isset($object) ? $object : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -161,6 +160,7 @@ function db_fetch_array($result) {
     $array = mysqli_fetch_array($result, MYSQLI_ASSOC);
     return isset($array) ? $array : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -179,7 +179,7 @@ function db_result($result) {
     // The mysqli_fetch_row function has an optional second parameter $row
     // but that can't be used for compatibility with Oracle, DB2, etc.
     $array = mysqli_fetch_row($result);
-    return $array[0];
+    return isset($array[0]) ? $array[0] : FALSE;
   }
   return FALSE;
 }
@@ -196,179 +196,72 @@ function db_error() {
  * Determine the number of rows changed by the preceding query.
  */
 function db_affected_rows() {
-  global $active_db; /* mysqli connection resource */
+  global $active_db;
   return mysqli_affected_rows($active_db);
 }
 
-/**
- * Runs a limited-range query in the active database.
- *
- * Use this as a substitute for db_query() when a subset of the query is to be
- * returned.
- * User-supplied arguments to the query should be passed in as separate parameters
- * so that they can be properly escaped to avoid SQL injection attacks.
- *
- * @param $query
- *   A string containing an SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. The query arguments can be enclosed in one
- *   array instead.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $from
- *   The first result row to return.
- * @param $count
- *   The maximum number of result rows to return.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_range($query) {
-  $args = func_get_args();
-  $count = array_pop($args);
-  $from = array_pop($args);
-  array_shift($args);
-
-  $query = db_prefix_tables($query);
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  $query .= ' LIMIT '. (int)$from .', '. (int)$count;
-  return _db_query($query);
+function db_escape_decimal($data) {
+  return (int) $data;
 }
 
 /**
- * Runs a SELECT query and stores its results in a temporary table.
- *
- * Use this as a substitute for db_query() when the results need to stored
- * in a temporary table. Temporary tables exist for the duration of the page
- * request.
- * User-supplied arguments to the query should be passed in as separate parameters
- * so that they can be properly escaped to avoid SQL injection attacks.
- *
- * Note that if you need to know how many results were returned, you should do
- * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
- * not give consistent result across different database types in this case.
- *
- * @param $query
- *   A string containing a normal SELECT SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. The query arguments can be enclosed in one
- *   array instead.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $table
- *   The name of the temporary table to select into. This name will not be
- *   prefixed as there is no risk of collision.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_temporary($query) {
-  $args = func_get_args();
-  $tablename = array_pop($args);
-  array_shift($args);
-
-  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' Engine=HEAP SELECT', db_prefix_tables($query));
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  return _db_query($query);
+function db_escape_float($data) {
+  return (float) $data;
 }
 
 /**
- * Returns a properly formatted Binary Large Object value.
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
  * @param $data
  *   Data to encode.
  * @return
- *  Encoded data.
+ *   Encoded data.
  */
-function db_encode_blob($data) {
+function db_escape_string($data) {
   global $active_db;
   return "'". mysqli_real_escape_string($active_db, $data) ."'";
 }
 
 /**
- * Returns text from a Binary Large OBject value.
+ * Returns a properly formatted Binary Large OBject value.
  *
  * @param $data
- *   Data to decode.
+ *   Data to encode.
  * @return
- *  Decoded data.
+ *   Encoded data.
  */
-function db_decode_blob($data) {
-  return $data;
-}
-
-/**
- * Prepare user input for use in a database query, preventing SQL injection attacks.
- */
-function db_escape_string($text) {
+function db_encode_blob($data) {
   global $active_db;
-  return mysqli_real_escape_string($active_db, $text);
-}
-
-/**
- * Lock a table.
- */
-function db_lock_table($table) {
-  db_query('LOCK TABLES {'. db_escape_table($table) .'} WRITE');
-}
-
-/**
- * Unlock all locked tables.
- */
-function db_unlock_tables() {
-  db_query('UNLOCK TABLES');
-}
-
-/**
- * Check if a table exists.
- */
-function db_table_exists($table) {
-  return (bool) db_fetch_object(db_query("SHOW TABLES LIKE '{". db_escape_table($table) ."}'"));
-}
-
-/**
- * Check if a column exists in the given table.
- */
-function db_column_exists($table, $column) {
-  return (bool) db_fetch_object(db_query("SHOW COLUMNS FROM {". db_escape_table($table) ."} LIKE '". db_escape_table($column) ."'"));
+  return "'". mysqli_real_escape_string($active_db, $data) ."'";
 }
 
 /**
- * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
- * the SELECT list entry of the given query and the resulting query is returned.
- * This function only applies the wrapper if a DISTINCT doesn't already exist in
- * the query.
+ * Returns text from a Binary Large OBject value.
  *
- * @param $table Table containing the field to set as DISTINCT
- * @param $field Field to set as DISTINCT
- * @param $query Query to apply the wrapper to
- * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
  */
-function db_distinct_field($table, $field, $query) {
-  $field_to_select = 'DISTINCT('. $table .'.'. $field .')';
-  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
-  return preg_replace('/(SELECT.*)(?:'. $table .'\.|\s)(?<!DISTINCT\()(?<!DISTINCT\('. $table .'\.)'. $field .'(.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
+function db_decode_blob($data) {
+  return $data;
 }
 
 /**
  * @} End of "ingroup database".
  */
-
Index: includes/database.oci8.inc
===================================================================
RCS file: includes/database.oci8.inc
diff -N includes/database.oci8.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.oci8.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,386 @@
+<?php
+// $Id: database.oci8.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for Oracle database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between oci8 and pdo_oci.
+require_once './includes/common.oracle.inc';
+
+// Include schema API shared between oci8 and pdo_oci.
+require_once './includes/schema.oracle.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if Oracle support is present in PHP
+  if (!(function_exists('oci_connect') && extension_loaded('oci8'))) {
+    _db_error_page('Unable to use the Oracle database because the oci8 extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build oci8 connection string and allow for non-standard Oracle port.
+  $conn_string = '//'. $url['db_host'] . (isset($url['db_port']) ? ':'. $url['db_port'] : '') .'/'. $url['db_name'];
+
+  // Even we can indicate charset parameter for oci_connect, which will be
+  // used in the new connection, we will not use this feature. Therefore
+  // NLS_LANG environment variable will be used instead.
+  $connection = @oci_connect($url['db_user'], $url['db_pass'], $conn_string);
+
+  // Test connecting to the database.
+  if (!$connection) {
+    $error = oci_error();
+    _db_error_page($error['message']);
+  }
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = oci_parse($active_db, $query);
+  if ($stmt === FALSE) {
+    // Indicate to drupal_error_handler that this is a database error.
+    ${DB_ERROR} = TRUE;
+    $error = oci_error($stmt);
+    trigger_error(check_plain($error['message'] ."\nquery: ". $query), E_USER_WARNING);
+    // On error, rollback the transaction.
+    oci_rollback($active_db);
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type']) && $args[$key]['type'] == SQLT_BLOB) {
+        // Bind the returned Oracle LOB locator to the PHP LOB object.
+        $args[$key]['obj'] = oci_new_descriptor($active_db, OCI_D_LOB);
+        oci_bind_by_name($stmt, $args[$key]['locator'], $args[$key]['obj'], -1, $args[$key]['type']);
+      }
+      else if (isset($args[$key]['type'])) {
+        oci_bind_by_name($stmt, $args[$key]['locator'], $args[$key]['data'], -1, $args[$key]['type']);
+      }
+      else {
+        oci_bind_by_name($stmt, $args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Oracle need to preform INSERT/UPDATE under a transcation, otherwise the
+  // newly inserted LOB will be committed with a zero-length.
+  // Execute the statement using OCI_DEFAULT (begin a transaction).
+  $result = oci_execute($stmt, OCI_DEFAULT);
+  if ($result === FALSE) {
+    // Indicate to drupal_error_handler that this is a database error.
+    ${DB_ERROR} = TRUE;
+    $error = oci_error($stmt);
+    trigger_error(check_plain($error['message'] ."\nquery: ". $query), E_USER_WARNING);
+    // On error, rollback the transaction.
+    oci_rollback($active_db);
+    return FALSE;
+  }
+
+  // A LOB Locator tells Oracle where it stashed the actual LOB contents
+  // without making the table rows overly large, and allows some clever
+  // optimizations when manipulating LOBs. You can't just conjure up a LOB
+  // Locator though, so you need to insert a brand new empty LOB into a table
+  // and then fetch it's locator back out before you can start modifying it.
+  // Check http://netevil.org/uuid/4365876a-cee9-3009-7726-365876a51802 for more information.
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type']) && $args[$key]['type'] == SQLT_BLOB) {
+        // Flush existing data before action.
+        @$args[$key]['obj']->truncate();
+        // Save value into Oracle object.
+        @$args[$key]['obj']->save($args[$key]['data']);
+        // Free resources.
+        @$args[$key]['obj']->free();
+      }
+    }
+  }
+
+  // On success, commit the transaction.
+  oci_commit($active_db);
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = oci_error($stmt);
+    print '<p>query: '. $query .'<br />error:'. $error['message'] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    if ($object = oci_fetch_object($result)) {
+      $return = new stdClass();
+      foreach ((array) $object as $key => $value) {
+        $column = $key;
+        // Preform short-to-long mapping if required.
+        $column = variable_get('oracle_'. $column, $column);
+        // Replace empty string placeholder.
+        $return->$column = $value != ORACLE_EMPTY_STRING_PLACEHOLDER ? $value : '';
+      }
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    if ($array = oci_fetch_assoc($result)) {
+      $return = array();
+      foreach ((array) $array as $key => $value) {
+        $column = $key;
+        // Preform short-to-long mapping if required.
+        $column = variable_get('oracle_'. $column, $column);
+        // Replace empty string placeholder.
+        $return[$column] = $value != ORACLE_EMPTY_STRING_PLACEHOLDER ? $value : '';
+      }
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result && oci_fetch($result)) {
+    if ($value = oci_result($result, 1)) {
+      // Replace empty string placeholder.
+      $return = $value != ORACLE_EMPTY_STRING_PLACEHOLDER ? $value : '';
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  $error = oci_error();
+  return $error['message'];
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return oci_num_rows($last_result);
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  // Replace as empty string placeholder, if not an empty string nor NULL.
+  $data = ($data !== '' && !is_null($data)) ? $data : ORACLE_EMPTY_STRING_PLACEHOLDER;
+  // Trim first 4000 characters, based on Oracle VARCHAR2(4000) limitation.
+  $data = preg_replace('/(.{0,4000})(.*)/', '\1', $data);
+
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => SQLT_CHR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  // Replace as empty string placeholder, if not an empty string nor NULL.
+  $data = ($data !== '' && !is_null($data)) ? $data : ORACLE_EMPTY_STRING_PLACEHOLDER;
+
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => SQLT_BLOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  // In case of Oracle LOBs are read via LOB->load().
+  return $data->load();
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pdo_ibm.inc
===================================================================
RCS file: includes/database.pdo_ibm.inc
diff -N includes/database.pdo_ibm.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.pdo_ibm.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,344 @@
+<?php
+// $Id: database.pdo_ibm.inc,v 1.3 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for DB2 database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between pgsql and pdo_ibm.
+require_once './includes/common.db2.inc';
+
+// Include schema API shared between pgsql and pdo_ibm.
+require_once './includes/schema.db2.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if PDO DB2 support is present in PHP.
+  if (!(class_exists('PDO') && extension_loaded('pdo_ibm'))) {
+    _db_error_page('Unable to use the DB2 database because the pdo_ibm extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build pdo_ibm connection string and allow for non-standard DB2 port.
+  $dsn[] = 'PROTOCOL=TCPIP';
+  $dsn[] = isset($url['db_host']) ? 'HOSTNAME='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'PORT='. $url['db_port'] : 'PORT=50000';
+  $dsn[] = isset($url['db_name']) ? 'DATABASE='. $url['db_name'] : NULL;
+  $dsn = 'ibm:'. implode(';', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    _db_error_page($e->getMessage());
+  }
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = $active_db->prepare($query);
+  if ($stmt === FALSE) {
+    $error = $active_db->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type'])) {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data'], $args[$key]['type']);
+      }
+      else {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Execute the statement.
+  $result = $stmt->execute();
+  if ($result === FALSE) {
+    $error = $stmt->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = $active_db->errorInfo();
+    print '<p>query: '. $query .'<br />error:'. $error[2] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    $object = $result->fetch(PDO::FETCH_OBJ);
+    return isset($object) ? $object : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_ASSOC);
+    return isset($array) ? $array : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_NUM);
+    return isset($array[0]) ? $array[0] : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  global $last_result;
+  $error = $last_result->errorInfo();
+  if (is_array($error) && isset($error[2])) {
+    return $error[2];
+  }
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return $last_result->rowCount();
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  // Trim first 4000 characters, since functions in the SYSFUN schema taking
+  // a VARCHAR as an argument will not accept VARCHARs greater than 4000
+  // bytes long as an argument.
+  $data = preg_replace('/(.{0,4000})(.*)/', '\1', $data);
+
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_STR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_LOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  // pdo_ibm return bytea as stream, so we just need to use Streams API.
+  // Check http://bugs.php.net/bug.php?id=37124 for more information.
+  return stream_get_contents($data);
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pdo_mysql.inc
===================================================================
RCS file: includes/database.pdo_mysql.inc
diff -N includes/database.pdo_mysql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.pdo_mysql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,346 @@
+<?php
+// $Id: database.pdo_mysql.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for MySQL database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between mysql, mysqli and pdo_mysql.
+require_once './includes/common.mysql.inc';
+
+// Include schema API shared between mysql, mysqli and pdo_mysql.
+require_once './includes/schema.mysql.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if PDO MySQL support is present in PHP.
+  if (!(class_exists('PDO') && extension_loaded('pdo_mysql'))) {
+    _db_error_page('Unable to use the MySQL database because the pdo_mysql extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build pdo_mysql connection string and allow for non-standard MySQL port.
+  $dsn[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $dsn[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $dsn = 'mysql:'. implode(';', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+    // Force MySQL driver will use the buffered versions of the MySQL API.
+    PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => TRUE,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    _db_error_page($e->getMessage());
+  }
+
+  // Require ANSI mode to improve SQL portability.
+  $stmt = $connection->exec("SET SESSION SQL_MODE = 'ANSI'");
+  // Force UTF-8
+  $stmt = $connection->exec('SET NAMES "UTF8"');
+
+  // Force MySQL driver will use the buffered versions of the MySQL API.
+  $connection->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, TRUE);
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = $active_db->prepare($query);
+  if ($stmt === FALSE) {
+    $error = $active_db->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type'])) {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data'], $args[$key]['type']);
+      }
+      else {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Execute the statement.
+  $result = $stmt->execute();
+  if ($result === FALSE) {
+    $error = $stmt->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = $active_db->errorInfo();
+    print '<p>query: '. $query .'<br />error:'. $error[2] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    $object = $result->fetch(PDO::FETCH_OBJ);
+    return isset($object) ? $object : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_ASSOC);
+    return isset($array) ? $array : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_NUM);
+    return isset($array[0]) ? $array[0] : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  global $last_result;
+  $error = $last_result->errorInfo();
+  if (is_array($error) && isset($error[2])) {
+    return $error[2];
+  }
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return $last_result->rowCount();
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_STR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_LOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  return $data;
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pdo_oci.inc
===================================================================
RCS file: includes/database.pdo_oci.inc
diff -N includes/database.pdo_oci.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.pdo_oci.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,404 @@
+<?php
+// $Id: database.pdo_oci.inc,v 1.1 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for Oracle database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between oci8 and pdo_oci.
+require_once './includes/common.oracle.inc';
+
+// Include schema API shared between oci8 and pdo_oci.
+require_once './includes/schema.oracle.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if PDO Oracle support is present in PHP.
+  if (!(class_exists('PDO') && extension_loaded('pdo_oci'))) {
+    _db_error_page('Unable to use the Oracle database because the pdo_oci extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build pdo_oci connection string and allow for non-standard Oracle port.
+  // Connect with Oracle Instant Client partten.
+  $url['host'] = urldecode($url['host']);
+  $url['path'] = urldecode($url['path']);
+  $dsn = 'oci://'. $url['db_host'] . (isset($url['db_port']) ? ':'. $url['db_port'] : '') .'/'. $url['db_name'];
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+    // Disable autocommit so that the connection begins a transaction.
+    PDO::ATTR_AUTOCOMMIT => FALSE,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    _db_error_page($e->getMessage());
+  }
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = $active_db->prepare($query);
+  if ($stmt === FALSE) {
+    $error = $active_db->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    $active_db->rollBack();
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type']) && $args[$key]['type'] == PDO::PARAM_LOB) {
+        // Bind the returned Oracle LOB locator to the PHP file handler.
+        // Use PDOStatement->bindParam() here for stream I/O handling.
+        $stmt->bindParam($args[$key]['locator'], $args[$key]['obj'], $args[$key]['type']);
+        $args[$key]['obj'] = NULL;
+      }
+      else if (isset($args[$key]['type'])) {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data'], $args[$key]['type']);
+      }
+      else {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Oracle need to preform INSERT/UPDATE under a transcation, otherwise the
+  // newly inserted LOB will be committed with a zero-length.
+  // Check http://php.net/pdo#pdo.lobs for more information.
+  $active_db->beginTransaction();
+
+  // Execute the statement.
+  $result = $stmt->execute();
+  if ($result === FALSE) {
+    $error = $stmt->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    $active_db->rollBack();
+    return FALSE;
+  }
+
+  // A LOB Locator tells Oracle where it stashed the actual LOB contents
+  // without making the table rows overly large, and allows some clever
+  // optimizations when manipulating LOBs. You can't just conjure up a LOB
+  // Locator though, so you need to insert a brand new empty LOB into a table
+  // and then fetch it's locator back out before you can start modifying it.
+  // Check http://netevil.org/uuid/4365876a-cee9-3009-7726-365876a51802 for more information.
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type']) && $args[$key]['type'] == PDO::PARAM_LOB) {
+        // Flush existing data before action.
+        fflush($args[$key]['obj']);
+        // Save value into INPUT/OUTPUT BLOB handler.
+        fwrite($args[$key]['obj'], $args[$key]['data']);
+        // Free resources.
+        fclose($args[$key]['obj']);
+      }
+    }
+  }
+
+  // On success, commit the transaction.
+  $active_db->commit();
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = $active_db->errorInfo();
+    print '<p>query: '. $query .'<br />error:'. $error[2] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    if ($object = $result->fetch(PDO::FETCH_OBJ)) {
+      $return = new stdClass();
+      foreach ((array) $object as $key => $value) {
+        $column = $key;
+        // Preform short-to-long mapping if required.
+        $column = variable_get('oracle_'. $column, $column);
+        // Replace empty string placeholder.
+        $return->$column = $value != ORACLE_EMPTY_STRING_PLACEHOLDER ? $value : '';
+      }
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    if ($array = $result->fetch(PDO::FETCH_ASSOC)) {
+      $return = array();
+      foreach ((array) $array as $key => $value) {
+        $column = $key;
+        // Preform short-to-long mapping if required.
+        $column = variable_get('oracle_'. $column, $column);
+        // Replace empty string placeholder.
+        $return[$column] = $value != ORACLE_EMPTY_STRING_PLACEHOLDER ? $value : '';
+      }
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result) {
+    if ($array = $result->fetch(PDO::FETCH_NUM)) {
+      // Replace empty string placeholder.
+      $return = $array[0] != ORACLE_EMPTY_STRING_PLACEHOLDER ? $array[0] : '';
+      return isset($return) ? $return : FALSE;
+    }
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  global $last_result;
+  $error = $last_result->errorInfo();
+  if (is_array($error) && isset($error[2])) {
+    return $error[2];
+  }
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return $last_result->rowCount();
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  // Replace as empty string placeholder, if not an empty string nor NULL.
+  $data = ($data !== '' && !is_null($data)) ? $data : ORACLE_EMPTY_STRING_PLACEHOLDER;
+  // Trim first 4000 characters, based on Oracle VARCHAR2(4000) limitation.
+  $data = preg_replace('/(.{0,4000})(.*)/', '\1', $data);
+
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_STR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  // Replace as empty string placeholder, if not an empty string nor NULL.
+  $data = ($data !== '' && !is_null($data)) ? $data : ORACLE_EMPTY_STRING_PLACEHOLDER;
+
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_LOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  // pdo_oci return bytea as stream, so we just need to use Streams API.
+  // Check http://bugs.php.net/bug.php?id=37124 for more information.
+  return stream_get_contents($data);
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pdo_pgsql.inc
===================================================================
RCS file: includes/database.pdo_pgsql.inc
diff -N includes/database.pdo_pgsql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.pdo_pgsql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,341 @@
+<?php
+// $Id: database.pdo_pgsql.inc,v 1.3 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for PostgreSQL database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between pgsql and pdo_pgsql.
+require_once './includes/common.postgresql.inc';
+
+// Include schema API shared between pgsql and pdo_pgsql.
+require_once './includes/schema.postgresql.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if PDO PostgreSQL support is present in PHP.
+  if (!(class_exists('PDO') && extension_loaded('pdo_pgsql'))) {
+    _db_error_page('Unable to use the PostgreSQL database because the pdo_pgsql extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build pdo_pgsql connection string and allow for non-standard PostgreSQL port.
+  $dsn[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $dsn[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $dsn = 'pgsql:'. implode(' ', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    _db_error_page($e->getMessage());
+  }
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = $active_db->prepare($query);
+  if ($stmt === FALSE) {
+    $error = $active_db->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type'])) {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data'], $args[$key]['type']);
+      }
+      else {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Execute the statement.
+  $result = $stmt->execute();
+  if ($result === FALSE) {
+    $error = $stmt->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = $active_db->errorInfo();
+    print '<p>query: '. $query .'<br />error:'. $error[2] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    $object = $result->fetch(PDO::FETCH_OBJ);
+    return isset($object) ? $object : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_ASSOC);
+    return isset($array) ? $array : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_NUM);
+    return isset($array[0]) ? $array[0] : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  global $last_result;
+  $error = $last_result->errorInfo();
+  if (is_array($error) && isset($error[2])) {
+    return $error[2];
+  }
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return $last_result->rowCount();
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_STR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  // LOB for PgSQL must define by PDO::PARAM_LOB, or else will case error
+  // during INSER/UPDATE. So we need to use Oracle style locator-data-type
+  // variable binding for pdo_pgsql.
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_LOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  // pdo_pgsql return bytea as stream, so we just need to use Streams API.
+  // Check http://bugs.php.net/bug.php?id=37124 for more information.
+  return stream_get_contents($data);
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pdo_sqlite.inc
===================================================================
RCS file: includes/database.pdo_sqlite.inc
diff -N includes/database.pdo_sqlite.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/database.pdo_sqlite.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,342 @@
+<?php
+// $Id: database.pdo_sqlite.inc,v 1.1 2008/02/03 10:08:54 hswong3i Exp $
+
+/**
+ * @file
+ * Database interface code for SQLite database servers.
+ */
+
+/**
+ * @ingroup database
+ * @{
+ */
+
+// Include functions shared between sqlite and pdo_sqlite.
+require_once './includes/common.sqlite.inc';
+
+// Include schema API shared between sqlite and pdo_sqlite.
+require_once './includes/schema.sqlite.inc';
+
+/**
+ * Initialize a database connection.
+ */
+function db_connect($url) {
+  // Check if PDO SQLite support is present in PHP.
+  if (!(class_exists('PDO') && extension_loaded('pdo_sqlite'))) {
+    _db_error_page('Unable to use the SQLite database because the pdo_sqlite extension for PHP is not installed. Check your php.ini to see how you can enable it.');
+  }
+
+  // Build pdo_sqlite connection string.
+  $dsn = 'sqlite:'. isset($url['db_name']) ? $url['db_name'] : ':memory';
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $username, $password, $driver_options);
+  } catch (PDOExecption $e) {
+    _db_error_page($e->getMessage());
+  }
+
+  // Modify the operation of the SQLite library
+  $connection->exec('PRAGMA SYNCHRONOUS = OFF');
+  $connection->exec('PRAGMA SHORT_COLUMN_NAMES = 1');
+  $connection->exec('PRAGMA TEMP_STORE = MEMORY');
+  $connection->exec('PRAGMA CACHE_SIZE = 5120');
+  $connection->exec('PRAGMA COUNT_CHANGES = OFF');
+  $connection->exec('PRAGMA ENCODING = "UTF-8"');
+
+  return $connection;
+}
+
+/**
+ * Runs a basic query in the active database.
+ *
+ * User-supplied arguments to the query should be passed in as separate
+ * parameters so that they can be properly escaped to avoid SQL injection
+ * attacks.
+ *
+ * @param $query
+ *   A string containing an SQL query.
+ * @param ...
+ *   A variable number of arguments which are substituted into the query
+ *   using printf() syntax. Instead of a variable number of query arguments,
+ *   you may also pass a single array containing the query arguments.
+ *
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
+ *
+ *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
+ *   and TRUE values to decimal 1.
+ *
+ * @return
+ *   A database query result resource, or FALSE if the query was not
+ *   executed correctly.
+ */
+function db_query($query) {
+  $args = func_get_args();
+  array_shift($args);
+  _debug_query($query);
+  $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
+  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
+    $args = $args[0];
+  }
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
+  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
+  $args = _db_query_callback(NULL, TRUE);
+  return _db_query(array('query' => $query, 'args' => $args));
+}
+
+/**
+ * Helper function for db_query().
+ */
+function _db_query($query, $debug = 0) {
+  global $active_db, $last_result, $queries, $user;
+
+  // Expand $query if it is in array format.
+  $args = array();
+  if (is_array($query)) {
+    $args = $query['args'];
+    $query = $query['query'];
+
+    // Check if locator exists in query, or else unset it.
+    foreach ($args as $key => $value) {
+      if (!is_array($args[$key]) || !isset($args[$key]['locator']) || !strstr($query, $args[$key]['locator'])) {
+        unset($args[$key]);
+      }
+    }
+  }
+
+  if (variable_get('dev_query', 0)) {
+    list($usec, $sec) = explode(' ', microtime());
+    $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
+  }
+
+  $stmt = $active_db->prepare($query);
+  if ($stmt === FALSE) {
+    $error = $active_db->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (count($args)) {
+    foreach ($args as $key => $value) {
+      if (isset($args[$key]['type'])) {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data'], $args[$key]['type']);
+      }
+      else {
+        $stmt->bindValue($args[$key]['locator'], $args[$key]['data']);
+      }
+    }
+  }
+
+  // Execute the statement.
+  $result = $stmt->execute();
+  if ($result === FALSE) {
+    $error = $stmt->errorInfo();
+    if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+      // Indicate to drupal_error_handler that this is a database error.
+      ${DB_ERROR} = TRUE;
+      trigger_error(check_plain($error[2] ."\nquery: ". $query), E_USER_WARNING);
+    }
+    return FALSE;
+  }
+
+  if (variable_get('dev_query', 0)) {
+    $query = $bt[2]['function'] ."\n". $query;
+    list($usec, $sec) = explode(' ', microtime());
+    $stop = (float)$usec + (float)$sec;
+    $diff = $stop - $timer;
+    $queries[] = array($query, $diff);
+  }
+
+  if ($debug) {
+    $error = $active_db->errorInfo();
+    print '<p>query: '. $query .'<br />error:'. $error[2] .'</p>';
+  }
+
+  $last_result = $stmt;
+  return $last_result;
+}
+
+/**
+ * Fetch one result row from the previous query as an object.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An object representing the next row of the result, or FALSE. The attributes
+ *   of this object are the table fields selected by the query.
+ */
+function db_fetch_object($result) {
+  if ($result) {
+    $object = $result->fetch(PDO::FETCH_OBJ);
+    return isset($object) ? $object : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Fetch one result row from the previous query as an array.
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   An associative array representing the next row of the result, or FALSE.
+ *   The keys of this object are the names of the table fields selected by the
+ *   query, and the values are the field values for this result row.
+ */
+function db_fetch_array($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_ASSOC);
+    return isset($array) ? $array : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Return an individual result field from the previous query.
+ *
+ * Only use this function if exactly one field is being selected; otherwise,
+ * use db_fetch_object() or db_fetch_array().
+ *
+ * @param $result
+ *   A database query result resource, as returned from db_query().
+ * @return
+ *   The resulting field or FALSE.
+ */
+function db_result($result) {
+  if ($result) {
+    $array = $result->fetch(PDO::FETCH_NUM);
+    return isset($array[0]) ? $array[0] : FALSE;
+  }
+  return FALSE;
+}
+
+/**
+ * Determine whether the previous query caused an error.
+ */
+function db_error() {
+  global $last_result;
+  $error = $last_result->errorInfo();
+  if (is_array($error) && isset($error[2])) {
+    return $error[2];
+  }
+}
+
+/**
+ * Determine the number of rows changed by the preceding query.
+ */
+function db_affected_rows() {
+  global $last_result;
+  return $last_result->rowCount();
+}
+
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_decimal(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (int) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_float(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => (float) $data,
+  );
+  return $locator;
+}
+
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_escape_string(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_STR,
+  );
+  return $locator;
+}
+
+/**
+ * Returns a properly formatted Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to encode. Return with processed array pattern for variable binding.
+ * @param $locator
+ *   Locator for variable binding.
+ * @return
+ *   Locator for variable binding.
+ */
+function db_encode_blob(&$data, $locator) {
+  $data = array(
+    'locator' => $locator,
+    'data' => $data,
+    'type' => PDO::PARAM_LOB,
+  );
+  return $locator;
+}
+
+/**
+ * Returns text from a Binary Large OBject value.
+ *
+ * @param $data
+ *   Data to decode.
+ * @return
+ *   Decoded data.
+ */
+function db_decode_blob($data) {
+  return $data;
+}
+
+/**
+ * @} End of "ingroup database".
+ */
Index: includes/database.pgsql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.pgsql.inc,v
retrieving revision 1.68.2.1
diff -u -p -r1.68.2.1 database.pgsql.inc
--- includes/database.pgsql.inc	7 Feb 2008 10:17:26 -0000	1.68.2.1
+++ includes/database.pgsql.inc	3 Apr 2008 07:55:01 -0000
@@ -11,64 +11,29 @@
  * @{
  */
 
-/**
- * Report database status.
- */
-function db_status_report() {
-  $t = get_t();
-
-  $version = db_version();
+// Include functions shared between pgsql and pdo_pgsql.
+require_once './includes/common.postgresql.inc';
 
-  $form['pgsql'] = array(
-    'title' => $t('PostgreSQL database'),
-    'value' => $version,
-  );
-
-  if (version_compare($version, DRUPAL_MINIMUM_PGSQL) < 0) {
-    $form['pgsql']['severity'] = REQUIREMENT_ERROR;
-    $form['pgsql']['description'] = $t('Your PostgreSQL Server is too old. Drupal requires at least PostgreSQL %version.', array('%version' => DRUPAL_MINIMUM_PGSQL));
-  }
-
-  return $form;
-}
-
-/**
- * Returns the version of the database server currently in use.
- *
- * @return Database server version
- */
-function db_version() {
-  return db_result(db_query("SHOW SERVER_VERSION"));
-}
+// Include schema API shared between pgsql and pdo_pgsql.
+require_once './includes/schema.postgresql.inc';
 
 /**
  * Initialize a database connection.
  */
 function db_connect($url) {
   // Check if PostgreSQL support is present in PHP
-  if (!function_exists('pg_connect')) {
-    _db_error_page('Unable to use the PostgreSQL database because the PostgreSQL extension for PHP is not installed. Check your <code>php.ini</code> to see how you can enable it.');
+  if (!(function_exists('pg_connect') && extension_loaded('pgsql'))) {
+    _db_error_page('Unable to use the PostgreSQL database because the pgsql extension for PHP is not installed. Check your php.ini to see how you can enable it.');
   }
 
-  $url = parse_url($url);
-  $conn_string = '';
-
   // Decode url-encoded information in the db connection string
-  if (isset($url['user'])) {
-    $conn_string .= ' user='. urldecode($url['user']);
-  }
-  if (isset($url['pass'])) {
-    $conn_string .= ' password='. urldecode($url['pass']);
-  }
-  if (isset($url['host'])) {
-    $conn_string .= ' host='. urldecode($url['host']);
-  }
-  if (isset($url['path'])) {
-    $conn_string .= ' dbname='. substr(urldecode($url['path']), 1);
-  }
-  if (isset($url['port'])) {
-    $conn_string .= ' port='. urldecode($url['port']);
-  }
+  $conn_string[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $conn_string[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $conn_string[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $conn_string[] = isset($url['db_user']) ? 'user='. $url['db_user'] : NULL;
+  $conn_string[] = isset($url['db_pass']) ? 'password='. $url['db_pass'] : NULL;
+
+  $conn_string = implode(' ', array_filter($conn_string));
 
   // pg_last_error() does not return a useful error message for database
   // connection errors. We must turn on error tracking to get at a good error
@@ -102,8 +67,8 @@ function db_connect($url) {
  *   using printf() syntax. Instead of a variable number of query arguments,
  *   you may also pass a single array containing the query arguments.
  *
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
+ *   Valid %-modifiers are: %s, %d, %f and %b (binary data, do not enclose
+ *   in '').
  *
  *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
  *   and TRUE values to decimal 1.
@@ -116,10 +81,11 @@ function db_query($query) {
   $args = func_get_args();
   array_shift($args);
   $query = db_prefix_tables($query);
+  $query = db_escape_quote($query);
   if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
     $args = $args[0];
   }
-  _db_query_callback($args, TRUE);
+  _db_query_callback(array('query' => $query, 'args' => $args), TRUE);
   $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
   return _db_query($query);
 }
@@ -128,17 +94,31 @@ function db_query($query) {
  * Helper function for db_query().
  */
 function _db_query($query, $debug = 0) {
-  global $active_db, $last_result, $queries;
+  global $active_db, $last_result, $queries, $user;
 
   if (variable_get('dev_query', 0)) {
     list($usec, $sec) = explode(' ', microtime());
     $timer = (float)$usec + (float)$sec;
+    // If devel.module query logging is enabled, prepend a comment with the username and calling function
+    // to the SQL string. This is useful when running mysql's SHOW PROCESSLIST to learn what exact
+    // code is issueing the slow query.
+    $bt = debug_backtrace();
+    // t() may not be available yet so we don't wrap 'Anonymous'.
+    $name = $user->uid ? $user->name : variable_get('anonymous', 'Anonymous');
+    // str_replace() to prevent SQL injection via username or anonymous name.
+    $name = str_replace(array('*', '/'), '', $name);
+    $query = '/* '. $name .' : '. $bt[2]['function'] .' */ '. $query;
   }
 
-  $last_result = pg_query($active_db, $query);
+  $stmt = pg_query($active_db, $query);
+  if ($stmt === FALSE) {
+    // Indicate to drupal_error_handler that this is a database error.
+    ${DB_ERROR} = TRUE;
+    trigger_error(check_plain(pg_last_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
+    return FALSE;
+  }
 
   if (variable_get('dev_query', 0)) {
-    $bt = debug_backtrace();
     $query = $bt[2]['function'] ."\n". $query;
     list($usec, $sec) = explode(' ', microtime());
     $stop = (float)$usec + (float)$sec;
@@ -150,15 +130,8 @@ function _db_query($query, $debug = 0) {
     print '<p>query: '. $query .'<br />error:'. pg_last_error($active_db) .'</p>';
   }
 
-  if ($last_result !== FALSE) {
-    return $last_result;
-  }
-  else {
-    // Indicate to drupal_error_handler that this is a database error.
-    ${DB_ERROR} = TRUE;
-    trigger_error(check_plain(pg_last_error($active_db) ."\nquery: ". $query), E_USER_WARNING);
-    return FALSE;
-  }
+  $last_result = $stmt;
+  return $last_result;
 }
 
 /**
@@ -172,8 +145,10 @@ function _db_query($query, $debug = 0) {
  */
 function db_fetch_object($result) {
   if ($result) {
-    return pg_fetch_object($result);
+    $object = pg_fetch_object($result);
+    return isset($object) ? $object : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -188,8 +163,10 @@ function db_fetch_object($result) {
  */
 function db_fetch_array($result) {
   if ($result) {
-    return pg_fetch_assoc($result);
+    $array = pg_fetch_assoc($result);
+    return isset($array) ? $array : FALSE;
   }
+  return FALSE;
 }
 
 /**
@@ -206,7 +183,7 @@ function db_fetch_array($result) {
 function db_result($result) {
   if ($result && pg_num_rows($result) > 0) {
     $array = pg_fetch_row($result);
-    return $array[0];
+    return isset($array[0]) ? $array[0] : FALSE;
   }
   return FALSE;
 }
@@ -220,707 +197,75 @@ function db_error() {
 }
 
 /**
- * Returns the last insert id. This function is thread safe.
- *
- * @param $table
- *   The name of the table you inserted into.
- * @param $field
- *   The name of the autoincrement field.
- */
-function db_last_insert_id($table, $field) {
-  return db_result(db_query("SELECT CURRVAL('{". db_escape_table($table) ."}_". db_escape_table($field) ."_seq')"));
-}
-
-/**
  * Determine the number of rows changed by the preceding query.
  */
 function db_affected_rows() {
   global $last_result;
-  return empty($last_result) ? 0 : pg_affected_rows($last_result);
+  return pg_affected_rows($last_result);
 }
 
-/**
- * Runs a limited-range query in the active database.
- *
- * Use this as a substitute for db_query() when a subset of the query
- * is to be returned.
- * User-supplied arguments to the query should be passed in as separate
- * parameters so that they can be properly escaped to avoid SQL injection
- * attacks.
- *
- * @param $query
- *   A string containing an SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. Instead of a variable number of query arguments,
- *   you may also pass a single array containing the query arguments.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+/*
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $from
- *   The first result row to return.
- * @param $count
- *   The maximum number of result rows to return.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_range($query) {
-  $args = func_get_args();
-  $count = array_pop($args);
-  $from = array_pop($args);
-  array_shift($args);
-
-  $query = db_prefix_tables($query);
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  $query .= ' LIMIT '. (int)$count .' OFFSET '. (int)$from;
-  return _db_query($query);
+function db_escape_decimal($data) {
+  return (int) $data;
 }
 
 /**
- * Runs a SELECT query and stores its results in a temporary table.
- *
- * Use this as a substitute for db_query() when the results need to stored
- * in a temporary table. Temporary tables exist for the duration of the page
- * request.
- * User-supplied arguments to the query should be passed in as separate parameters
- * so that they can be properly escaped to avoid SQL injection attacks.
- *
- * Note that if you need to know how many results were returned, you should do
- * a SELECT COUNT(*) on the temporary table afterwards. db_affected_rows() does
- * not give consistent result across different database types in this case.
- *
- * @param $query
- *   A string containing a normal SELECT SQL query.
- * @param ...
- *   A variable number of arguments which are substituted into the query
- *   using printf() syntax. The query arguments can be enclosed in one
- *   array instead.
- *   Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose
- *   in '') and %%.
- *
- *   NOTE: using this syntax will cast NULL and FALSE values to decimal 0,
- *   and TRUE values to decimal 1.
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
  *
- * @param $table
- *   The name of the temporary table to select into. This name will not be
- *   prefixed as there is no risk of collision.
+ * @param $data
+ *   Data to encode.
  * @return
- *   A database query result resource, or FALSE if the query was not executed
- *   correctly.
+ *   Encoded data.
  */
-function db_query_temporary($query) {
-  $args = func_get_args();
-  $tablename = array_pop($args);
-  array_shift($args);
+function db_escape_float($data) {
+  return (float) $data;
+}
 
-  $query = preg_replace('/^SELECT/i', 'CREATE TEMPORARY TABLE '. $tablename .' AS SELECT', db_prefix_tables($query));
-  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
-    $args = $args[0];
-  }
-  _db_query_callback($args, TRUE);
-  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
-  return _db_query($query);
+/**
+ * Prepare user input for use in a database query, preventing SQL injection attacks.
+ *
+ * @param $data
+ *   Data to encode.
+ * @return
+ *   Encoded data.
+ */
+function db_escape_string($data) {
+  return "'". pg_escape_string($data) ."'";
 }
 
 /**
  * Returns a properly formatted Binary Large OBject value.
- * In case of PostgreSQL encodes data for insert into bytea field.
  *
  * @param $data
  *   Data to encode.
  * @return
- *  Encoded data.
+ *   Encoded data.
  */
 function db_encode_blob($data) {
+  // In case of PostgreSQL encodes data for INSERT into bytea field.
   return "'". pg_escape_bytea($data) ."'";
 }
 
 /**
  * Returns text from a Binary Large OBject value.
- * In case of PostgreSQL decodes data after select from bytea field.
  *
  * @param $data
  *   Data to decode.
  * @return
- *  Decoded data.
+ *   Decoded data.
  */
 function db_decode_blob($data) {
+  // In case of PostgreSQL decodes data after select from bytea field.
   return pg_unescape_bytea($data);
 }
 
 /**
- * Prepare user input for use in a database query, preventing SQL injection attacks.
- * Note: This function requires PostgreSQL 7.2 or later.
- */
-function db_escape_string($text) {
-  return pg_escape_string($text);
-}
-
-/**
- * Lock a table.
- * This function automatically starts a transaction.
- */
-function db_lock_table($table) {
-  db_query('BEGIN; LOCK TABLE {'. db_escape_table($table) .'} IN EXCLUSIVE MODE');
-}
-
-/**
- * Unlock all locked tables.
- * This function automatically commits a transaction.
- */
-function db_unlock_tables() {
-  db_query('COMMIT');
-}
-
-/**
- * Check if a table exists.
- */
-function db_table_exists($table) {
-  return (bool) db_result(db_query("SELECT COUNT(*) FROM pg_class WHERE relname = '{". db_escape_table($table) ."}'"));
-}
-
-/**
- * Check if a column exists in the given table.
- */
-function db_column_exists($table, $column) {
-  return (bool) db_result(db_query("SELECT COUNT(pg_attribute.attname) FROM pg_class, pg_attribute WHERE pg_attribute.attrelid = pg_class.oid AND pg_class.relname = '{". db_escape_table($table) ."}' AND attname = '". db_escape_table($column) ."'"));
-}
-
-/**
- * Verify if the database is set up correctly.
- */
-function db_check_setup() {
-  $t = get_t();
-
-  $encoding = db_result(db_query('SHOW server_encoding'));
-  if (!in_array(strtolower($encoding), array('unicode', 'utf8'))) {
-    drupal_set_message($t('Your PostgreSQL database is set up with the wrong character encoding (%encoding). It is possible it will not work as expected. It is advised to recreate it with UTF-8/Unicode encoding. More information can be found in the <a href="@url">PostgreSQL documentation</a>.', array('%encoding' => $encoding, '@url' => 'http://www.postgresql.org/docs/7.4/interactive/multibyte.html')), 'status');
-  }
-}
-
-/**
- * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to
- * the SELECT list entry of the given query and the resulting query is returned.
- * This function only applies the wrapper if a DISTINCT doesn't already exist in
- * the query.
- *
- * @param $table Table containing the field to set as DISTINCT
- * @param $field Field to set as DISTINCT
- * @param $query Query to apply the wrapper to
- * @return SQL query with the DISTINCT wrapper surrounding the given table.field.
- */
-function db_distinct_field($table, $field, $query) {
-  $field_to_select = 'DISTINCT ON ('. $table .'.'. $field .") $table.$field";
-  // (?<!text) is a negative look-behind (no need to rewrite queries that already use DISTINCT).
-  $query = preg_replace('/(SELECT.*)(?:'. $table .'\.|\s)(?<!DISTINCT\()(?<!DISTINCT\('. $table .'\.)'. $field .'(.*FROM )/AUsi', '\1 '. $field_to_select .'\2', $query);
-  $query = preg_replace('/(ORDER BY )(?!'. $table .'\.'. $field .')/', '\1'."$table.$field, ", $query);
-  return $query;
-}
-
-/**
  * @} End of "ingroup database".
  */
-
-/**
- * @ingroup schemaapi
- * @{
- */
-
-/**
- * This maps a generic data type in combination with its data size
- * to the engine-specific data type.
- */
-function db_type_map() {
-  // Put :normal last so it gets preserved by array_flip.  This makes
-  // it much easier for modules (such as schema.module) to map
-  // database types back into schema types.
-  $map = array(
-    'varchar:normal' => 'varchar',
-    'char:normal' => 'character',
-
-    'text:tiny' => 'text',
-    'text:small' => 'text',
-    'text:medium' => 'text',
-    'text:big' => 'text',
-    'text:normal' => 'text',
-
-    'int:tiny' => 'smallint',
-    'int:small' => 'smallint',
-    'int:medium' => 'int',
-    'int:big' => 'bigint',
-    'int:normal' => 'int',
-
-    'float:tiny' => 'real',
-    'float:small' => 'real',
-    'float:medium' => 'real',
-    'float:big' => 'double precision',
-    'float:normal' => 'real',
-
-    'numeric:normal' => 'numeric',
-
-    'blob:big' => 'bytea',
-    'blob:normal' => 'bytea',
-
-    'datetime:normal' => 'timestamp',
-
-    'serial:tiny' => 'serial',
-    'serial:small' => 'serial',
-    'serial:medium' => 'serial',
-    'serial:big' => 'bigserial',
-    'serial:normal' => 'serial',
-  );
-  return $map;
-}
-
-/**
- * Generate SQL to create a new table from a Drupal schema definition.
- *
- * @param $name
- *   The name of the table to create.
- * @param $table
- *   A Schema API table definition array.
- * @return
- *   An array of SQL statements to create the table.
- */
-function db_create_table_sql($name, $table) {
-  $sql_fields = array();
-  foreach ($table['fields'] as $field_name => $field) {
-    $sql_fields[] = _db_create_field_sql($field_name, _db_process_field($field));
-  }
-
-  $sql_keys = array();
-  if (isset($table['primary key']) && is_array($table['primary key'])) {
-    $sql_keys[] = 'PRIMARY KEY ('. implode(', ', $table['primary key']) .')';
-  }
-  if (isset($table['unique keys']) && is_array($table['unique keys'])) {
-    foreach ($table['unique keys'] as $key_name => $key) {
-      $sql_keys[] = 'CONSTRAINT {'. $name .'}_'. $key_name .'_key UNIQUE ('. implode(', ', $key) .')';
-    }
-  }
-
-  $sql = "CREATE TABLE {". $name ."} (\n\t";
-  $sql .= implode(",\n\t", $sql_fields);
-  if (count($sql_keys) > 0) {
-    $sql .= ",\n\t";
-  }
-  $sql .= implode(",\n\t", $sql_keys);
-  $sql .= "\n)";
-  $statements[] = $sql;
-
-  if (isset($table['indexes']) && is_array($table['indexes'])) {
-    foreach ($table['indexes'] as $key_name => $key) {
-      $statements[] = _db_create_index_sql($name, $key_name, $key);
-    }
-  }
-
-  return $statements;
-}
-
-function _db_create_index_sql($table, $name, $fields) {
-  $query = 'CREATE INDEX {'. $table .'}_'. $name .'_idx ON {'. $table .'} (';
-  $query .= _db_create_key_sql($fields) .')';
-  return $query;
-}
-
-function _db_create_key_sql($fields) {
-  $ret = array();
-  foreach ($fields as $field) {
-    if (is_array($field)) {
-      $ret[] = 'substr('. $field[0] .', 1, '. $field[1] .')';
-    }
-    else {
-      $ret[] = $field;
-    }
-  }
-  return implode(', ', $ret);
-}
-
-function _db_create_keys(&$ret, $table, $new_keys) {
-  if (isset($new_keys['primary key'])) {
-    db_add_primary_key($ret, $table, $new_keys['primary key']);
-  }
-  if (isset($new_keys['unique keys'])) {
-    foreach ($new_keys['unique keys'] as $name => $fields) {
-      db_add_unique_key($ret, $table, $name, $fields);
-    }
-  }
-  if (isset($new_keys['indexes'])) {
-    foreach ($new_keys['indexes'] as $name => $fields) {
-      db_add_index($ret, $table, $name, $fields);
-    }
-  }
-}
-
-/**
- * Set database-engine specific properties for a field.
- *
- * @param $field
- *   A field description array, as specified in the schema documentation.
- */
-function _db_process_field($field) {
-  if (!isset($field['size'])) {
-    $field['size'] = 'normal';
-  }
-  // Set the correct database-engine specific datatype.
-  if (!isset($field['pgsql_type'])) {
-    $map = db_type_map();
-    $field['pgsql_type'] = $map[$field['type'] .':'. $field['size']];
-  }
-  if ($field['type'] == 'serial') {
-    unset($field['not null']);
-  }
-  return $field;
-}
-
-/**
- * Create an SQL string for a field to be used in table creation or alteration.
- *
- * Before passing a field out of a schema definition into this function it has
- * to be processed by _db_process_field().
- *
- * @param $name
- *    Name of the field.
- * @param $spec
- *    The field specification, as per the schema data structure format.
- */
-function _db_create_field_sql($name, $spec) {
-  $sql = $name .' '. $spec['pgsql_type'];
-
-  if ($spec['type'] == 'serial') {
-    unset($spec['not null']);
-  }
-  if (!empty($spec['unsigned'])) {
-    if ($spec['type'] == 'serial') {
-      $sql .= " CHECK ($name >= 0)";
-    }
-    else {
-      $sql .= '_unsigned';
-    }
-  }
-
-  if (!empty($spec['length'])) {
-    $sql .= '('. $spec['length'] .')';
-  }
-  elseif (isset($spec['precision']) && isset($spec['scale'])) {
-    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
-  }
-
-  if (isset($spec['not null']) && $spec['not null']) {
-    $sql .= ' NOT NULL';
-  }
-  if (isset($spec['default'])) {
-    $default = is_string($spec['default']) ? "'". $spec['default'] ."'" : $spec['default'];
-    $sql .= " default $default";
-  }
-
-  return $sql;
-}
-
-/**
- * Rename a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be renamed.
- * @param $new_name
- *   The new name for the table.
- */
-function db_rename_table(&$ret, $table, $new_name) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} RENAME TO {'. $new_name .'}');
-}
-
-/**
- * Drop a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be dropped.
- */
-function db_drop_table(&$ret, $table) {
-  $ret[] = update_sql('DROP TABLE {'. $table .'}');
-}
-
-/**
- * Add a new field to a table.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   Name of the table to be altered.
- * @param $field
- *   Name of the field to be added.
- * @param $spec
- *   The field specification array, as taken from a schema definition.
- *   The specification may also contain the key 'initial', the newly
- *   created field will be set to the value of the key in all rows.
- *   This is most useful for creating NOT NULL columns with no default
- *   value in existing tables.
- * @param $keys_new
- *   Optional keys and indexes specification to be created on the
- *   table along with adding the field. The format is the same as a
- *   table specification but without the 'fields' element.  If you are
- *   adding a type 'serial' field, you MUST specify at least one key
- *   or index including it in this array. @see db_change_field for more
- *   explanation why.
- */
-function db_add_field(&$ret, $table, $field, $spec, $new_keys = array()) {
-  $fixnull = FALSE;
-  if (!empty($spec['not null']) && !isset($spec['default'])) {
-    $fixnull = TRUE;
-    $spec['not null'] = FALSE;
-  }
-  $query = 'ALTER TABLE {'. $table .'} ADD COLUMN ';
-  $query .= _db_create_field_sql($field, _db_process_field($spec));
-  $ret[] = update_sql($query);
-  if (isset($spec['initial'])) {
-    // All this because update_sql does not support %-placeholders.
-    $sql = 'UPDATE {'. $table .'} SET '. $field .' = '. db_type_placeholder($spec['type']);
-    $result = db_query($sql, $spec['initial']);
-    $ret[] = array('success' => $result !== FALSE, 'query' => check_plain($sql .' ('. $spec['initial'] .')'));
-  }
-  if ($fixnull) {
-    $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $field SET NOT NULL");
-  }
-  if (isset($new_keys)) {
-    _db_create_keys($ret, $table, $new_keys);
-  }
-}
-
-/**
- * Drop a field.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be dropped.
- */
-function db_drop_field(&$ret, $table, $field) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP COLUMN '. $field);
-}
-
-/**
- * Set the default value for a field.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be altered.
- * @param $default
- *   Default value to be set. NULL for 'default NULL'.
- */
-function db_field_set_default(&$ret, $table, $field, $default) {
-  if ($default == NULL) {
-    $default = 'NULL';
-  }
-  else {
-    $default = is_string($default) ? "'$default'" : $default;
-  }
-
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ALTER COLUMN '. $field .' SET DEFAULT '. $default);
-}
-
-/**
- * Set a field to have no default value.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $field
- *   The field to be altered.
- */
-function db_field_set_no_default(&$ret, $table, $field) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ALTER COLUMN '. $field .' DROP DEFAULT');
-}
-
-/**
- * Add a primary key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $fields
- *   Fields for the primary key.
- */
-function db_add_primary_key(&$ret, $table, $fields) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ADD PRIMARY KEY ('.
-    implode(',', $fields) .')');
-}
-
-/**
- * Drop the primary key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- */
-function db_drop_primary_key(&$ret, $table) {
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP CONSTRAINT {'. $table .'}_pkey');
-}
-
-/**
- * Add a unique key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the key.
- * @param $fields
- *   An array of field names.
- */
-function db_add_unique_key(&$ret, $table, $name, $fields) {
-  $name = '{'. $table .'}_'. $name .'_key';
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} ADD CONSTRAINT '.
-    $name .' UNIQUE ('. implode(',', $fields) .')');
-}
-
-/**
- * Drop a unique key.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the key.
- */
-function db_drop_unique_key(&$ret, $table, $name) {
-  $name = '{'. $table .'}_'. $name .'_key';
-  $ret[] = update_sql('ALTER TABLE {'. $table .'} DROP CONSTRAINT '. $name);
-}
-
-/**
- * Add an index.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the index.
- * @param $fields
- *   An array of field names.
- */
-function db_add_index(&$ret, $table, $name, $fields) {
-  $ret[] = update_sql(_db_create_index_sql($table, $name, $fields));
-}
-
-/**
- * Drop an index.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   The table to be altered.
- * @param $name
- *   The name of the index.
- */
-function db_drop_index(&$ret, $table, $name) {
-  $name = '{'. $table .'}_'. $name .'_idx';
-  $ret[] = update_sql('DROP INDEX '. $name);
-}
-
-/**
- * Change a field definition.
- *
- * IMPORTANT NOTE: To maintain database portability, you have to explicitly
- * recreate all indices and primary keys that are using the changed field.
- *
- * That means that you have to drop all affected keys and indexes with
- * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
- * To recreate the keys and indices, pass the key definitions as the
- * optional $new_keys argument directly to db_change_field().
- *
- * For example, suppose you have:
- * @code
- * $schema['foo'] = array(
- *   'fields' => array(
- *     'bar' => array('type' => 'int', 'not null' => TRUE)
- *   ),
- *   'primary key' => array('bar')
- * );
- * @endcode
- * and you want to change foo.bar to be type serial, leaving it as the
- * primary key.  The correct sequence is:
- * @code
- * db_drop_primary_key($ret, 'foo');
- * db_change_field($ret, 'foo', 'bar', 'bar',
- *   array('type' => 'serial', 'not null' => TRUE),
- *   array('primary key' => array('bar')));
- * @endcode
- *
- * The reasons for this are due to the different database engines:
- *
- * On PostgreSQL, changing a field definition involves adding a new field
- * and dropping an old one which* causes any indices, primary keys and
- * sequences (from serial-type fields) that use the changed field to be dropped.
- *
- * On MySQL, all type 'serial' fields must be part of at least one key
- * or index as soon as they are created.  You cannot use
- * db_add_{primary_key,unique_key,index}() for this purpose because
- * the ALTER TABLE command will fail to add the column without a key
- * or index specification.  The solution is to use the optional
- * $new_keys argument to create the key or index at the same time as
- * field.
- *
- * You could use db_add_{primary_key,unique_key,index}() in all cases
- * unless you are converting a field to be type serial. You can use
- * the $new_keys argument in all cases.
- *
- * @param $ret
- *   Array to which query results will be added.
- * @param $table
- *   Name of the table.
- * @param $field
- *   Name of the field to change.
- * @param $field_new
- *   New name for the field (set to the same as $field if you don't want to change the name).
- * @param $spec
- *   The field specification for the new field.
- * @param $new_keys
- *   Optional keys and indexes specification to be created on the
- *   table along with changing the field. The format is the same as a
- *   table specification but without the 'fields' element.
- */
-function db_change_field(&$ret, $table, $field, $field_new, $spec, $new_keys = array()) {
-  $ret[] = update_sql("ALTER TABLE {". $table ."} RENAME $field TO ". $field ."_old");
-  $not_null = isset($spec['not null']) ? $spec['not null'] : FALSE;
-  unset($spec['not null']);
-
-  db_add_field($ret, $table, "$field_new", $spec);
-
-  $ret[] = update_sql("UPDATE {". $table ."} SET $field_new = ". $field ."_old");
-
-  if ($not_null) {
-    $ret[] = update_sql("ALTER TABLE {". $table ."} ALTER $field_new SET NOT NULL");
-  }
-
-  db_drop_field($ret, $table, $field .'_old');
-
-  if (isset($new_keys)) {
-    _db_create_keys($ret, $table, $new_keys);
-  }
-}
-
-/**
- * @} End of "ingroup schemaapi".
- */
-
Index: includes/file.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/file.inc,v
retrieving revision 1.121.2.1
diff -u -p -r1.121.2.1 file.inc
--- includes/file.inc	7 Feb 2008 18:20:37 -0000	1.121.2.1
+++ includes/file.inc	3 Apr 2008 07:55:01 -0000
@@ -22,7 +22,7 @@ define('FILE_EXISTS_ERROR', 2);
 
 /**
  * A files status can be one of two values: temporary or permanent. The status
- * for each file Drupal manages is stored in the {files} tables. If the status
+ * for each file Drupal manages is stored in the [{files}] tables. If the status
  * is temporary Drupal's file garbage collection will delete the file and
  * remove it from the files table after a set period of time.
  *
@@ -445,9 +445,9 @@ function file_delete($path) {
  */
 function file_space_used($uid = NULL) {
   if (isset($uid)) {
-    return (int) db_result(db_query('SELECT SUM(filesize) FROM {files} WHERE uid = %d', $uid));
+    return (int) db_result(db_query('SELECT SUM([filesize]) FROM [{files}] WHERE [uid] = %d', $uid));
   }
-  return (int) db_result(db_query('SELECT SUM(filesize) FROM {files}'));
+  return (int) db_result(db_query('SELECT SUM([filesize]) FROM [{files}]'));
 }
 
 /**
@@ -777,7 +777,7 @@ function file_save_data($data, $dest, $r
  *     status.
  */
 function file_set_status(&$file, $status) {
-  if (db_query('UPDATE {files} SET status = %d WHERE fid = %d', $status, $file->fid)) {
+  if (db_query('UPDATE [{files}] SET [status] = %d WHERE [fid] = %d', $status, $file->fid)) {
     $file->status = $status;
     return TRUE;
   }
Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.265.2.4
diff -u -p -r1.265.2.4 form.inc
--- includes/form.inc	11 Feb 2008 14:45:57 -0000	1.265.2.4
+++ includes/form.inc	3 Apr 2008 07:55:01 -0000
@@ -2306,10 +2306,10 @@ function form_clean_id($id = NULL, $flus
  *   if (empty($context['sandbox'])) {
  *     $context['sandbox']['progress'] = 0;
  *     $context['sandbox']['current_node'] = 0;
- *     $context['sandbox']['max'] = db_result(db_query('SELECT COUNT(DISTINCT nid) FROM {node}'));
+ *     $context['sandbox']['max'] = db_result(db_query('SELECT COUNT(DISTINCT [nid]) FROM [{node}]'));
  *   }
  *   $limit = 5;
- *   $result = db_query_range("SELECT nid FROM {node} WHERE nid > %d ORDER BY nid ASC", $context['sandbox']['current_node'], 0, $limit);
+ *   $result = db_query_range("SELECT [nid] FROM [{node}] WHERE [nid] > %d ORDER BY [nid] ASC", $context['sandbox']['current_node'], 0, $limit);
  *   while ($row = db_fetch_array($result)) {
  *     $node = node_load($row['nid'], NULL, TRUE);
  *     $context['results'][] = $node->nid .' : '. $node->title;
@@ -2473,7 +2473,7 @@ function batch_process($redirect = NULL,
 
       // Initiate db storage in order to get a batch id. We have to provide
       // at least an empty string for the (not null) 'token' column.
-      db_query("INSERT INTO {batch} (token, timestamp) VALUES ('', %d)", time());
+      db_query("INSERT INTO [{batch}] ([token], [timestamp]) VALUES (%s, %d)", '', time());
       $batch['id'] = db_last_insert_id('batch', 'bid');
 
       // Now that we have a batch id, we can generate the redirection link in
@@ -2482,7 +2482,7 @@ function batch_process($redirect = NULL,
       $batch['error_message'] = $t('Please continue to <a href="@error_url">the error page</a>', array('@error_url' => url($url, array('query' => array('id' => $batch['id'], 'op' => 'finished')))));
 
       // Actually store the batch data and the token generated form the batch id.
-      db_query("UPDATE {batch} SET token = '%s', batch = '%s' WHERE bid = %d", drupal_get_token($batch['id']), serialize($batch), $batch['id']);
+      db_query("UPDATE [{batch}] SET [token] = %s, [batch] = %s WHERE [bid] = %d", drupal_get_token($batch['id']), serialize($batch), $batch['id']);
 
       drupal_goto($batch['url'], 'op=start&id='. $batch['id']);
     }
Index: includes/image.gd.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/image.gd.inc,v
retrieving revision 1.4
diff -u -p -r1.4 image.gd.inc
--- includes/image.gd.inc	15 Jan 2008 10:17:42 -0000	1.4
+++ includes/image.gd.inc	3 Apr 2008 07:55:01 -0000
@@ -38,7 +38,7 @@ function image_gd_settings() {
       '#field_suffix' => t('%'),
     );
     $form['#element_validate'] = array('image_gd_settings_validate');
-    
+
     return $form;
   }
   else {
Index: includes/install.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.inc,v
retrieving revision 1.56.2.2
diff -u -p -r1.56.2.2 install.inc
--- includes/install.inc	11 Feb 2008 15:10:26 -0000	1.56.2.2
+++ includes/install.inc	3 Apr 2008 07:55:01 -0000
@@ -77,7 +77,7 @@ function drupal_get_installed_schema_ver
 
   if (!$versions) {
     $versions = array();
-    $result = db_query("SELECT name, schema_version FROM {system} WHERE type = '%s'", 'module');
+    $result = db_query("SELECT [name], [schema_version] FROM [{system}] WHERE [type] = %s", 'module');
     while ($row = db_fetch_object($result)) {
       $versions[$row->name] = $row->schema_version;
     }
@@ -95,7 +95,7 @@ function drupal_get_installed_schema_ver
  *   The new schema version.
  */
 function drupal_set_installed_schema_version($module, $version) {
-  db_query("UPDATE {system} SET schema_version = %d WHERE name = '%s'", $version, $module);
+  db_query("UPDATE [{system}] SET [schema_version] = %d WHERE [name] = %s", $version, $module);
 }
 
 /**
@@ -151,12 +151,13 @@ function drupal_detect_baseurl($file = '
 function drupal_detect_database_types() {
   $databases = array();
 
-  foreach (array('mysql', 'mysqli', 'pgsql') as $type) {
-    if (file_exists('./includes/install.'. $type .'.inc')) {
-      include_once './includes/install.'. $type .'.inc';
-      $function = $type .'_is_available';
+  foreach (glob('./includes/database.*.inc') as $driver_file) {
+    list(, $driver) = explode('.', basename($driver_file));
+    if (file_exists('./includes/database.'. $driver .'.inc') && file_exists('./includes/install.'. $driver .'.inc')) {
+      include_once './includes/install.'. $driver .'.inc';
+      $function = $driver .'_is_available';
       if ($function()) {
-        $databases[$type] = $type;
+        $databases[$driver] = $driver;
       }
     }
   }
@@ -212,7 +213,7 @@ function drupal_rewrite_settings($settin
           // Write new value to settings.php in the following format:
           //    $'setting' = 'value'; // 'comment'
           $setting = $settings[$variable[1]];
-          $buffer .= '$'. $variable[1] ." = '". $setting['value'] ."';". (!empty($setting['comment']) ? ' // '. $setting['comment'] ."\n" : "\n");
+          $buffer .= '$'. $variable[1] ." = ". var_export($setting['value'], TRUE) .";". (!empty($setting['comment']) ? ' // '. $setting['comment'] ."\n" : "\n");
           unset($settings[$variable[1]]);
         }
         else {
@@ -228,7 +229,7 @@ function drupal_rewrite_settings($settin
     // Add required settings that were missing from settings.php.
     foreach ($settings as $setting => $data) {
       if ($data['required']) {
-        $buffer .= "\$$setting = '". $data['value'] ."';\n";
+        $buffer .= "\$$setting = ". var_export($data['value'], TRUE) .";\n";
       }
     }
 
@@ -359,7 +360,7 @@ function drupal_install_system() {
   module_invoke('system', 'install');
   $system_versions = drupal_get_schema_versions('system');
   $system_version = $system_versions ? max($system_versions) : SCHEMA_INSTALLED;
-  db_query("INSERT INTO {system} (filename, name, type, owner, status, throttle, bootstrap, schema_version) VALUES('%s', '%s', '%s', '%s', %d, %d, %d, %d)", $system_path .'/system.module', 'system', 'module', '', 1, 0, 0, $system_version);
+  db_query("INSERT INTO [{system}] ([filename], [name], [type], [owner], [status], [throttle], [bootstrap], [schema_version]) VALUES(%s, %s, %s, %s, %d, %d, %d, %d)", $system_path .'/system.module', 'system', 'module', '', 1, 0, 0, $system_version);
   // Now that we've installed things properly, bootstrap the full Drupal environment
   drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
   module_rebuild_cache();
@@ -394,9 +395,9 @@ function drupal_uninstall_module($module
       }
       $paths[$index] = implode('/', $parts);
     }
-    $placeholders = implode(', ', array_fill(0, count($paths), "'%s'"));
+    $placeholders = implode(', ', array_fill(0, count($paths), "%s"));
 
-    $result = db_query('SELECT * FROM {menu_links} WHERE router_path IN ('. $placeholders .') AND external = 0 ORDER BY depth DESC', $paths);
+    $result = db_query('SELECT * FROM [{menu_links}] WHERE [router_path] IN ('. $placeholders .') AND [external] = 0 ORDER BY [depth] DESC', $paths);
     // Remove all such items. Starting from those with the greatest depth will
     // minimize the amount of re-parenting done by menu_link_delete().
     while ($item = db_fetch_array($result)) {
Index: includes/install.mysql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.mysql.inc,v
retrieving revision 1.9
diff -u -p -r1.9 install.mysql.inc
--- includes/install.mysql.inc	23 Jan 2008 09:59:29 -0000	1.9
+++ includes/install.mysql.inc	3 Apr 2008 07:55:01 -0000
@@ -1,16 +1,16 @@
 <?php
 // $Id: install.mysql.inc,v 1.9 2008/01/23 09:59:29 goba Exp $
 
-// MySQL specific install functions
+// mysql specific install functions.
 
 /**
- * Check if MySQL is available.
+ * Check if mysql is available.
  *
  * @return
  *  TRUE/FALSE
  */
 function mysql_is_available() {
-  return function_exists('mysql_connect');
+  return function_exists('mysql_connect') && extension_loaded('mysql');
 }
 
 /**
@@ -21,32 +21,24 @@ function mysql_is_available() {
  */
 function drupal_test_mysql($url, &$success) {
   if (!mysql_is_available()) {
-    drupal_set_message(st('PHP MySQL support not enabled.'), 'error');
+    drupal_set_message(st('PHP mysql support not enabled.'), 'error');
     return FALSE;
   }
 
-  $url = parse_url($url);
-
-  // Decode url-encoded information in the db connection string.
-  $url['user'] = urldecode($url['user']);
-  $url['pass'] = isset($url['pass']) ? urldecode($url['pass']) : '';
-  $url['host'] = urldecode($url['host']);
-  $url['path'] = urldecode($url['path']);
-
   // Allow for non-standard MySQL port.
-  if (isset($url['port'])) {
-    $url['host'] = $url['host'] .':'. $url['port'];
+  if (isset($url['db_port'])) {
+    $url['db_host'] = $url['db_host'] .':'. $url['db_port'];
   }
 
   // Test connecting to the database.
-  $connection = @mysql_connect($url['host'], $url['user'], $url['pass'], TRUE, 2);
+  $connection = @mysql_connect($url['db_host'], $url['db_user'], $url['db_pass'], TRUE, 2);
   if (!$connection) {
     drupal_set_message(st('Failed to connect to your MySQL database server. MySQL reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => mysql_error())), 'error');
     return FALSE;
   }
 
   // Test selecting the database.
-  if (!mysql_select_db(substr($url['path'], 1))) {
+  if (!mysql_select_db($url['db_name'])) {
     drupal_set_message(st('Failed to select your database on your MySQL database server, which means the connection username and password are valid, but there is a problem accessing your data. MySQL reports the following message: %error.<ul><li>Are you sure you have the correct database name?</li><li>Are you sure the database exists?</li><li>Are you sure the username has permission to access the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => mysql_error())), 'error');
     return FALSE;
   }
@@ -54,7 +46,7 @@ function drupal_test_mysql($url, &$succe
   $success = array('CONNECT');
 
   // Test CREATE.
-  $query = 'CREATE TABLE drupal_install_test (id int NULL)';
+  $query = 'CREATE TABLE `drupal_install_test` (`id` INT NULL)';
   $result = mysql_query($query);
   if ($error = mysql_error()) {
     drupal_set_message(st('Failed to create a test table on your MySQL database server with the command %query. MySQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary MySQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error)), 'error');
@@ -65,7 +57,7 @@ function drupal_test_mysql($url, &$succe
   $success[] = 'CREATE';
 
   // Test INSERT.
-  $query = 'INSERT INTO drupal_install_test (id) VALUES (1)';
+  $query = 'INSERT INTO `drupal_install_test` (`id`) VALUES (1)';
   $result = mysql_query($query);
   if ($error = mysql_error()) {
     drupal_set_message(st('Failed to insert a value into a test table on your MySQL database server. We tried inserting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -76,7 +68,7 @@ function drupal_test_mysql($url, &$succe
   }
 
   // Test UPDATE.
-  $query = 'UPDATE drupal_install_test SET id = 2';
+  $query = 'UPDATE `drupal_install_test` SET `id` = 2';
   $result = mysql_query($query);
   if ($error = mysql_error()) {
     drupal_set_message(st('Failed to update a value in a test table on your MySQL database server. We tried updating a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -87,7 +79,7 @@ function drupal_test_mysql($url, &$succe
   }
 
   // Test DELETE.
-  $query = 'DELETE FROM drupal_install_test';
+  $query = 'DELETE FROM `drupal_install_test`';
   $result = mysql_query($query);
   if ($error = mysql_error()) {
     drupal_set_message(st('Failed to delete a value from a test table on your MySQL database server. We tried deleting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -98,7 +90,7 @@ function drupal_test_mysql($url, &$succe
   }
 
   // Test DROP.
-  $query = 'DROP TABLE drupal_install_test';
+  $query = 'DROP TABLE `drupal_install_test`';
   $result = mysql_query($query);
   if ($error = mysql_error()) {
     drupal_set_message(st('Failed to drop a test table from your MySQL database server. We tried dropping a table with the command %query and MySQL reported the following error %error.', array('%query' => $query, '%error' => $error)), 'error');
Index: includes/install.mysqli.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.mysqli.inc,v
retrieving revision 1.12
diff -u -p -r1.12 install.mysqli.inc
--- includes/install.mysqli.inc	23 Jan 2008 09:59:29 -0000	1.12
+++ includes/install.mysqli.inc	3 Apr 2008 07:55:01 -0000
@@ -1,16 +1,16 @@
 <?php
 // $Id: install.mysqli.inc,v 1.12 2008/01/23 09:59:29 goba Exp $
 
-// MySQLi specific install functions
+// mysqli specific install functions.
 
 /**
- * Check if MySQLi is available.
+ * Check if mysqli is available.
  *
  * @return
  *  TRUE/FALSE
  */
 function mysqli_is_available() {
-  return function_exists('mysqli_connect');
+  return function_exists('mysqli_init') && extension_loaded('mysqli');
 }
 
 /**
@@ -21,20 +21,12 @@ function mysqli_is_available() {
  */
 function drupal_test_mysqli($url, &$success) {
   if (!mysqli_is_available()) {
-    drupal_set_message(st('PHP MySQLi support not enabled.'), 'error');
+    drupal_set_message(st('PHP mysqli support not enabled.'), 'error');
     return FALSE;
   }
 
-  $url = parse_url($url);
-
-  // Decode url-encoded information in the db connection string.
-  $url['user'] = urldecode($url['user']);
-  $url['pass'] = isset($url['pass']) ? urldecode($url['pass']) : '';
-  $url['host'] = urldecode($url['host']);
-  $url['path'] = urldecode($url['path']);
-
   $connection = mysqli_init();
-  @mysqli_real_connect($connection, $url['host'], $url['user'], $url['pass'], substr($url['path'], 1), $url['port'], NULL, MYSQLI_CLIENT_FOUND_ROWS);
+  @mysqli_real_connect($connection, $url['db_host'], $url['db_user'], $url['db_pass'], $url['db_name'], $url['db_port'], NULL, MYSQLI_CLIENT_FOUND_ROWS);
   if (mysqli_connect_errno() >= 2000 || mysqli_connect_errno() == 1045) {
     drupal_set_message(st('Failed to connect to your MySQL database server. MySQL reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => mysqli_connect_error())), 'error');
     return FALSE;
@@ -49,7 +41,7 @@ function drupal_test_mysqli($url, &$succ
   $success = array('CONNECT');
 
   // Test CREATE.
-  $query = 'CREATE TABLE drupal_install_test (id int NULL)';
+  $query = 'CREATE TABLE `drupal_install_test` (`id` INT NULL)';
   $result = mysqli_query($connection, $query);
   if ($error = mysqli_error($connection)) {
     drupal_set_message(st('Failed to create a test table on your MySQL database server with the command %query. MySQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary MySQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error)), 'error');
@@ -60,7 +52,7 @@ function drupal_test_mysqli($url, &$succ
   $success[] = 'CREATE';
 
   // Test INSERT.
-  $query = 'INSERT INTO drupal_install_test (id) VALUES (1)';
+  $query = 'INSERT INTO `drupal_install_test` (`id`) VALUES (1)';
   $result = mysqli_query($connection, $query);
   if ($error = mysqli_error($connection)) {
     drupal_set_message(st('Failed to insert a value into a test table on your MySQL database server. We tried inserting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -71,7 +63,7 @@ function drupal_test_mysqli($url, &$succ
   }
 
   // Test UPDATE.
-  $query = 'UPDATE drupal_install_test SET id = 2';
+  $query = 'UPDATE `drupal_install_test` SET `id` = 2';
   $result = mysqli_query($connection, $query);
   if ($error = mysqli_error($connection)) {
     drupal_set_message(st('Failed to update a value in a test table on your MySQL database server. We tried updating a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -82,7 +74,7 @@ function drupal_test_mysqli($url, &$succ
   }
 
   // Test DELETE.
-  $query = 'DELETE FROM drupal_install_test';
+  $query = 'DELETE FROM `drupal_install_test`';
   $result = mysqli_query($connection, $query);
   if ($error = mysqli_error($connection)) {
     drupal_set_message(st('Failed to delete a value from a test table on your MySQL database server. We tried deleting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -93,7 +85,7 @@ function drupal_test_mysqli($url, &$succ
   }
 
   // Test DROP.
-  $query = 'DROP TABLE drupal_install_test';
+  $query = 'DROP TABLE `drupal_install_test`';
   $result = mysqli_query($connection, $query);
   if ($error = mysqli_error($connection)) {
     drupal_set_message(st('Failed to drop a test table from your MySQL database server. We tried dropping a table with the command %query and MySQL reported the following error %error.', array('%query' => $query, '%error' => $error)), 'error');
Index: includes/install.oci8.inc
===================================================================
RCS file: includes/install.oci8.inc
diff -N includes/install.oci8.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.oci8.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,134 @@
+<?php
+// $Id: install.oci8.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+// oci8 specific install functions.
+
+/**
+ * Check if oci8 is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function oci8_is_available() {
+  return function_exists('oci_connect') && extension_loaded('oci8');
+}
+
+/**
+ * Check if we can connect to Oracle.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_oci8($url, &$success) {
+  if (!oci8_is_available()) {
+    drupal_set_message(st('PHP oci8 support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build oci8 connection string and allow for non-standard Oracle port.
+  $conn_string = '//'. $url['db_host'] . (isset($url['db_port']) ? ':'. $url['db_port'] : '') .'/'. $url['db_name'];
+
+  // Even we can indicate charset parameter for oci_connect, which will be
+  // used in the new connection, we will not use this feature. Therefore
+  // NLS_LANG environment variable will be used instead.
+  $connection = @oci_connect($url['db_user'], $url['db_pass'], $conn_string);
+
+  // Test connecting to the database.
+  if (!$connection && ($error = oci_error())) {
+    drupal_set_message(st('Failure to connect to your Oracle database server. Oracle reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.<br />Error: '. $error, array('%error' => 'Connection failed. See log file for failure reason')), 'error');
+    return FALSE;
+  }
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE "drupal_install_test" ("id" NUMBER(38) NOT NULL)';
+  $stmt = @oci_parse($connection, $query);
+  if (!$stmt && ($error = oci_error($connection))) {
+    drupal_set_message(st('We were unable to create a test table on your Oracle database server with the command %query. Oracle reports the following message: %error.<ul><li>Are you sure the configured username has the necessary Oracle permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error)), 'error');
+    return FALSE;
+  }
+  $result = @oci_execute($stmt);
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to insert a value into a test table on your Oracle database server. We tried inserting a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to update a value in a test table on your Oracle database server. We tried updating a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'LOCK TABLE "drupal_install_test" IN EXCLUSIVE MODE';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to lock a test table on your Oracle database server. We tried locking a table with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK.
+  $query = 'COMMIT';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to unlock a test table on your Oracle database server. We tried unlocking a table with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM "drupal_install_test"';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to delete a value from a test table on your Oracle database server. We tried deleting a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE "drupal_install_test"';
+  $stmt = @oci_parse($connection, $query);
+  $result = @oci_execute($stmt);
+  if ($error = oci_error($stmt)) {
+    drupal_set_message(st('We were unable to drop a test table from your Oracle database server. We tried dropping a table with the command %query and Oracle reported the following error %error.', array('%query' => $query, '%error' => $error)), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  oci_close($connection);
+  return TRUE;
+}
Index: includes/install.pdo_ibm.inc
===================================================================
RCS file: includes/install.pdo_ibm.inc
diff -N includes/install.pdo_ibm.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.pdo_ibm.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,149 @@
+<?php
+// $Id$
+
+// pdo_ibm specific install functions.
+
+/**
+ * Check if PDO DB2 is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function pdo_ibm_is_available() {
+  return class_exists('PDO') && extension_loaded('pdo_ibm');
+}
+
+/**
+ * Check if we can connect to DB2.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_pdo_ibm($url, &$success) {
+  if (!pdo_ibm_is_available()) {
+    drupal_set_message(st('PHP pdo_ibm support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build pdo_ibm connection string and allow for non-standard DB2 port.
+  $dsn[] = 'PROTOCOL=TCPIP';
+  $dsn[] = isset($url['db_host']) ? 'HOSTNAME='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'PORT='. $url['db_port'] : 'PORT=50000';
+  $dsn[] = isset($url['db_name']) ? 'DATABASE='. $url['db_name'] : NULL;
+  $dsn = 'ibm:'. implode(';', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    drupal_set_message(st('Failed to connect to your DB2 database server. DB2 reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => $e->getMessage())), 'error');
+    return FALSE;
+  }
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE "drupal_install_test" ("id" INTEGER NOT NULL)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to create a test table on your DB2 database server with the command %query. DB2 reports the following message: %error.<ul><li>Are you sure the configured username has the necessary DB2 permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error[2])), 'error');
+    return FALSE;
+  }
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to insert a value into a test table on your DB2 database server. We tried inserting a value with the command %query and DB2 reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to update a value in a test table on your DB2 database server. We tried updating a value with the command %query and DB2 reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'LOCK TABLE "drupal_install_test" IN EXCLUSIVE MODE';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to lock a test table on your DB2 database server. We tried locking a table with the command %query and DB2 reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK.
+  $query = 'COMMIT';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to unlock a test table on your DB2 database server. We tried unlocking a table with the command %query and DB2 reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to delete a value from a test table on your DB2 database server. We tried deleting a value with the command %query and DB2 reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to drop a test table from your DB2 database server. We tried dropping a table with the command %query and DB2 reported the following error %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  $connection = NULL;
+  return TRUE;
+}
Index: includes/install.pdo_mysql.inc
===================================================================
RCS file: includes/install.pdo_mysql.inc
diff -N includes/install.pdo_mysql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.pdo_mysql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,155 @@
+<?php
+// $Id: install.pdo_mysql.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+// pdo_mysql specific install functions.
+
+/**
+ * Check if pdo_mysql is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function pdo_mysql_is_available() {
+  return class_exists('PDO') && extension_loaded('pdo_mysql');
+}
+
+/**
+ * Check if we can connect to MySQL.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_pdo_mysql($url, &$success) {
+  if (!pdo_mysql_is_available()) {
+    drupal_set_message(st('PHP pdo_mysql support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build pdo_mysql connection string and allow for non-standard MySQL port.
+  $dsn[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $dsn[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $dsn = 'mysql:'. implode(';', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+    // Force MySQL driver will use the buffered versions of the MySQL API.
+    PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => TRUE,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    drupal_set_message(st('Failed to connect to your MySQL database server. MySQL reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => $e->getMessage())), 'error');
+    return FALSE;
+  }
+
+  // Require ANSI mode to improve SQL portability.
+  $stmt = $connection->exec("SET SESSION SQL_MODE = 'ANSI'");
+  // Force UTF-8
+  $stmt = $connection->exec('SET NAMES "UTF8"');
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE `drupal_install_test` (`id` INT NULL)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to create a test table on your MySQL database server with the command %query. MySQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary MySQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error[2])), 'error');
+    return FALSE;
+  }
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO `drupal_install_test` (`id`) VALUES (1)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to insert a value into a test table on your MySQL database server. We tried inserting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE `drupal_install_test` SET `id` = 2';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to update a value in a test table on your MySQL database server. We tried updating a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'LOCK TABLES `drupal_install_test` WRITE';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to lock a test table on your MySQL database server. We tried locking a table with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK.
+  $query = 'UNLOCK TABLES';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to unlock a test table on your MySQL database server. We tried unlocking a table with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM `drupal_install_test`';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to delete a value from a test table on your MySQL database server. We tried deleting a value with the command %query and MySQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE `drupal_install_test`';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to drop a test table from your MySQL database server. We tried dropping a table with the command %query and MySQL reported the following error %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  $connection = NULL;
+  return TRUE;
+}
Index: includes/install.pdo_oci.inc
===================================================================
RCS file: includes/install.pdo_oci.inc
diff -N includes/install.pdo_oci.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.pdo_oci.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,150 @@
+<?php
+// $Id: install.pdo_oci.inc,v 1.1 2007/12/11 07:21:32 hswong3i Exp $
+
+// pdo_oci specific install functions.
+
+/**
+ * Check if pdo_oci is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function pdo_oci_is_available() {
+  return class_exists('PDO') && extension_loaded('pdo_oci');
+}
+
+/**
+ * Check if we can connect to Oracle.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_pdo_oci($url, &$success) {
+  if (!pdo_oci_is_available()) {
+    drupal_set_message(st('PHP pdo_oci support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build pdo_oci connection string and allow for non-standard Oracle port.
+  // Connect with Oracle Instant Client partten.
+  $url['host'] = urldecode($url['host']);
+  $url['path'] = urldecode($url['path']);
+  $dsn = 'oci://'. $url['db_host'] . (isset($url['db_port']) ? ':'. $url['db_port'] : '') .'/'. $url['db_name'];
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+    // Disable autocommit so that the connection begins a transaction.
+    PDO::ATTR_AUTOCOMMIT => FALSE,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    drupal_set_message(st('Failure to connect to your Oracle database server. Oracle reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => $e->getMessage())), 'error');
+    return FALSE;
+  }
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE "drupal_install_test" ("id" NUMBER(38) NOT NULL)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to create a test table on your Oracle database server with the command %query. Oracle reports the following message: %error.<ul><li>Are you sure the configured username has the necessary Oracle permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error[2])), 'error');
+    return FALSE;
+  }
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to insert a value into a test table on your Oracle database server. We tried inserting a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to update a value in a test table on your Oracle database server. We tried updating a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'LOCK TABLE "drupal_install_test" IN EXCLUSIVE MODE';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to lock a test table on your Oracle database server. We tried locking a table with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK
+  $query = 'COMMIT';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to unlock a test table on your Oracle database server. We tried unlocking a table with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to delete a value from a test table on your Oracle database server. We tried deleting a value with the command %query and Oracle reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('We were unable to drop a test table from your Oracle database server. We tried dropping a table with the command %query and Oracle reported the following error %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  $connection = NULL;
+  return TRUE;
+}
Index: includes/install.pdo_pgsql.inc
===================================================================
RCS file: includes/install.pdo_pgsql.inc
diff -N includes/install.pdo_pgsql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.pdo_pgsql.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,148 @@
+<?php
+// $Id: install.pdo_pgsql.inc,v 1.2 2007/12/11 07:21:32 hswong3i Exp $
+
+// pdo_pgsql specific install functions.
+
+/**
+ * Check if pdo_pgsql is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function pdo_pgsql_is_available() {
+  return class_exists('PDO') && extension_loaded('pdo_pgsql');
+}
+
+/**
+ * Check if we can connect to PostgreSQL.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_pdo_pgsql($url, &$success) {
+  if (!pdo_pgsql_is_available()) {
+    drupal_set_message(st('PHP pdo_pgsql support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build pdo_pgsql connection string and allow for non-standard PostgreSQL port.
+  $dsn[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $dsn[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $dsn[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $dsn = 'pgsql:'. implode(' ', $dsn);
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $url['db_user'], $url['db_pass'], $driver_options);
+  } catch (PDOExecption $e) {
+    drupal_set_message(st('Failed to connect to your PostgreSQL database server. PostgreSQL reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => $e->getMessage())), 'error');
+    return FALSE;
+  }
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE "drupal_install_test" ("id" INT NOT NULL)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to create a test table on your PostgreSQL database server with the command %query. PostgreSQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary PostgreSQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error[2])), 'error');
+    return FALSE;
+  }
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to insert a value into a test table on your PostgreSQL database server. We tried inserting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to update a value in a test table on your PostgreSQL database server. We tried updating a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'LOCK "drupal_install_test" IN SHARE ROW EXCLUSIVE MODE';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to lock a test table on your PostgreSQL database server. We tried locking a table with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK.
+  $query = 'COMMIT';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to unlock a test table on your PostgreSQL database server. We tried unlocking a table with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to delete a value from a test table on your PostgreSQL database server. We tried deleting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to drop a test table from your PostgreSQL database server. We tried dropping a table with the command %query and PostgreSQL reported the following error %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  $connection = NULL;
+  return TRUE;
+}
Index: includes/install.pdo_sqlite.inc
===================================================================
RCS file: includes/install.pdo_sqlite.inc
diff -N includes/install.pdo_sqlite.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/install.pdo_sqlite.inc	3 Apr 2008 07:55:01 -0000
@@ -0,0 +1,153 @@
+<?php
+// $Id: install.pdo_sqlite.inc,v 1.1 2008/02/03 10:08:54 hswong3i Exp $
+
+// pdo_sqlite specific install functions.
+
+/**
+ * Check if PDO SQLite is available.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function pdo_sqlite_is_available() {
+  return class_exists('PDO') && extension_loaded('pdo_sqlite');
+}
+
+/**
+ * Check if we can connect to SQLite.
+ *
+ * @return
+ *  TRUE/FALSE
+ */
+function drupal_test_pdo_sqlite($url, &$success) {
+  if (!pdo_sqlite_is_available()) {
+    drupal_set_message(st('PHP pdo_sqlite support not enabled.'), 'error');
+    return FALSE;
+  }
+
+  // Build pdo_sqlite connection string.
+  $dsn = 'sqlite:'. isset($url['db_name']) ? $url['db_name'] : ':memory';
+
+  $driver_options = array(
+    // Throw a PDOException and set its properties to reflect the error code
+    // and error information.
+    PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
+    //  Leave column names as returned by the database driver.
+    PDO::ATTR_CASE => PDO::CASE_NATURAL,
+  );
+
+  try {
+    $connection = new PDO($dsn, $username, $password, $driver_options);
+  } catch (PDOExecption $e) {
+    drupal_set_message(st('Failed to connect to your SQLite database server. SQLite reports the following message: %error.<ul><li>Are you sure you have the correct username and password?</li><li>Are you sure that you have typed the correct database hostname?</li><li>Are you sure that the database server is running?</li><li>Are you sure you typed the correct database name?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%error' => $e->getMessage())), 'error');
+    return FALSE;
+  }
+
+  // Modify the operation of the SQLite library
+  $connection->exec('PRAGMA SYNCHRONOUS = OFF');
+  $connection->exec('PRAGMA SHORT_COLUMN_NAMES = 1');
+  $connection->exec('PRAGMA TEMP_STORE = MEMORY');
+  $connection->exec('PRAGMA CACHE_SIZE = 5120');
+  $connection->exec('PRAGMA COUNT_CHANGES = OFF');
+  $connection->exec('PRAGMA ENCODING = "UTF-8"');
+
+  $success = array('CONNECT');
+
+  // Test CREATE.
+  $query = 'CREATE TABLE "drupal_install_test" ("id" INTEGER)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to create a test table on your SQLite database server with the command %query. SQLite reports the following message: %error.<ul><li>Are you sure the configured username has the necessary SQLite permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error[2])), 'error');
+    return FALSE;
+  }
+  $err = FALSE;
+  $success[] = 'SELECT';
+  $success[] = 'CREATE';
+
+  // Test INSERT.
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to insert a value into a test table on your SQLite database server. We tried inserting a value with the command %query and SQLite reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'INSERT';
+  }
+
+  // Test UPDATE.
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to update a value in a test table on your SQLite database server. We tried updating a value with the command %query and SQLite reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UPDATE';
+  }
+
+  // Test LOCK.
+  $query = 'BEGIN';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to lock a test table on your SQLite database server. We tried locking a table with the command %query and SQLite reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'LOCK';
+  }
+
+  // Test UNLOCK.
+  $query = 'COMMIT';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to unlock a test table on your SQLite database server. We tried unlocking a table with the command %query and SQLite reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'UNLOCK';
+  }
+
+  // Test DELETE.
+  $query = 'DELETE FROM "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to delete a value from a test table on your SQLite database server. We tried deleting a value with the command %query and SQLite reported the following error: %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DELETE';
+  }
+
+  // Test DROP.
+  $query = 'DROP TABLE "drupal_install_test"';
+  $stmt = $connection->prepare($query);
+  $stmt->execute();
+  $error = $stmt->errorInfo();
+  if (is_array($error) && $error[0] != 0 && isset($error[2])) {
+    drupal_set_message(st('Failed to drop a test table from your SQLite database server. We tried dropping a table with the command %query and SQLite reported the following error %error.', array('%query' => $query, '%error' => $error[2])), 'error');
+    $err = TRUE;
+  }
+  else {
+    $success[] = 'DROP';
+  }
+
+  if ($err) {
+    return FALSE;
+  }
+
+  $connection = NULL;
+  return TRUE;
+}
Index: includes/install.pgsql.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.pgsql.inc,v
retrieving revision 1.6
diff -u -p -r1.6 install.pgsql.inc
--- includes/install.pgsql.inc	22 Oct 2007 15:22:39 -0000	1.6
+++ includes/install.pgsql.inc	3 Apr 2008 07:55:01 -0000
@@ -1,16 +1,16 @@
 <?php
 // $Id: install.pgsql.inc,v 1.6 2007/10/22 15:22:39 dries Exp $
 
-// PostgreSQL specific install functions
+// pgsql specific install functions.
 
 /**
- * Check if PostgreSQL is available.
+ * Check if pgsql is available.
  *
  * @return
  *  TRUE/FALSE
  */
 function pgsql_is_available() {
-  return function_exists('pg_connect');
+  return function_exists('pg_connect') && extension_loaded('pgsql');
 }
 
 /**
@@ -21,29 +21,18 @@ function pgsql_is_available() {
  */
 function drupal_test_pgsql($url, &$success) {
   if (!pgsql_is_available()) {
-    drupal_set_message(st('PHP PostgreSQL support not enabled.'), 'error');
+    drupal_set_message(st('PHP pgsql support not enabled.'), 'error');
     return FALSE;
   }
 
-  $url = parse_url($url);
-  $conn_string = '';
-
   // Decode url-encoded information in the db connection string
-  if (isset($url['user'])) {
-    $conn_string .= ' user='. urldecode($url['user']);
-  }
-  if (isset($url['pass'])) {
-    $conn_string .= ' password='. urldecode($url['pass']);
-  }
-  if (isset($url['host'])) {
-    $conn_string .= ' host='. urldecode($url['host']);
-  }
-  if (isset($url['path'])) {
-    $conn_string .= ' dbname='. substr(urldecode($url['path']), 1);
-  }
-  if (isset($url['port'])) {
-    $conn_string .= ' port='. urldecode($url['port']);
-  }
+  $conn_string[] = isset($url['db_host']) ? 'host='. $url['db_host'] : NULL;
+  $conn_string[] = isset($url['db_port']) ? 'port='. $url['db_port'] : NULL;
+  $conn_string[] = isset($url['db_name']) ? 'dbname='. $url['db_name'] : NULL;
+  $conn_string[] = isset($url['db_user']) ? 'user='. $url['db_user'] : NULL;
+  $conn_string[] = isset($url['db_pass']) ? 'password='. $url['db_pass'] : NULL;
+
+  $conn_string = implode(' ', array_filter($conn_string));
 
   // Test connecting to the database.
   $connection = @pg_connect($conn_string);
@@ -55,7 +44,7 @@ function drupal_test_pgsql($url, &$succe
   $success = array('CONNECT');
 
   // Test CREATE.
-  $query = 'CREATE TABLE drupal_install_test (id integer NOT NULL)';
+  $query = 'CREATE TABLE "drupal_install_test" ("id" INT NOT NULL)';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error($result)) {
     drupal_set_message(st('Failed to create a test table on your PostgreSQL database server with the command %query. PostgreSQL reports the following message: %error.<ul><li>Are you sure the configured username has the necessary PostgreSQL permissions to create tables in the database?</li></ul>For more help, see the <a href="http://drupal.org/node/258">Installation and upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.', array('%query' => $query, '%error' => $error)), 'error');
@@ -66,7 +55,7 @@ function drupal_test_pgsql($url, &$succe
   $success[] = 'CREATE';
 
   // Test INSERT.
-  $query = 'INSERT INTO drupal_install_test (id) VALUES (1)';
+  $query = 'INSERT INTO "drupal_install_test" ("id") VALUES (1)';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error($result)) {
     drupal_set_message(st('Failed to insert a value into a test table on your PostgreSQL database server. We tried inserting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -77,7 +66,7 @@ function drupal_test_pgsql($url, &$succe
   }
 
   // Test UPDATE.
-  $query = 'UPDATE drupal_install_test SET id = 2';
+  $query = 'UPDATE "drupal_install_test" SET "id" = 2';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error($result)) {
     drupal_set_message(st('Failed to update a value in a test table on your PostgreSQL database server. We tried updating a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -88,7 +77,7 @@ function drupal_test_pgsql($url, &$succe
   }
 
   // Test LOCK.
-  $query = 'BEGIN; LOCK drupal_install_test IN SHARE ROW EXCLUSIVE MODE';
+  $query = 'LOCK "drupal_install_test" IN SHARE ROW EXCLUSIVE MODE';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error($result)) {
     drupal_set_message(st('Failed to lock a test table on your PostgreSQL database server. We tried locking a table with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -98,7 +87,7 @@ function drupal_test_pgsql($url, &$succe
     $success[] = 'LOCK';
   }
 
-  // Test UNLOCK, which is done automatically upon transaction end in PostgreSQL
+  // Test UNLOCK.
   $query = 'COMMIT';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error()) {
@@ -110,7 +99,7 @@ function drupal_test_pgsql($url, &$succe
   }
 
   // Test DELETE.
-  $query = 'DELETE FROM drupal_install_test';
+  $query = 'DELETE FROM "drupal_install_test"';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error()) {
     drupal_set_message(st('Failed to delete a value from a test table on your PostgreSQL database server. We tried deleting a value with the command %query and PostgreSQL reported the following error: %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -121,7 +110,7 @@ function drupal_test_pgsql($url, &$succe
   }
 
   // Test DROP.
-  $query = 'DROP TABLE drupal_install_test';
+  $query = 'DROP TABLE "drupal_install_test"';
   $result = pg_query($connection, $query);
   if ($error = pg_result_error()) {
     drupal_set_message(st('Failed to drop a test table from your PostgreSQL database server. We tried dropping a table with the command %query and PostgreSQL reported the following error %error.', array('%query' => $query, '%error' => $error)), 'error');
@@ -137,4 +126,4 @@ function drupal_test_pgsql($url, &$succe
 
   pg_close($connection);
   return TRUE;
-}
\ No newline at end of file
+}
Index: includes/language.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/language.inc,v
retrieving revision 1.14
diff -u -p -r1.14 language.inc
--- includes/language.inc	6 Jan 2008 16:46:02 -0000	1.14
+++ includes/language.inc	3 Apr 2008 07:55:01 -0000
@@ -17,7 +17,7 @@ function language_initialize() {
   // Get a list of enabled languages.
   $languages = language_list('enabled');
   $languages = $languages[1];
-  
+
   switch ($mode) {
     case LANGUAGE_NEGOTIATION_NONE:
       return language_default();
Index: includes/locale.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/locale.inc,v
retrieving revision 1.174
diff -u -p -r1.174 locale.inc
--- includes/locale.inc	9 Jan 2008 21:36:13 -0000	1.174
+++ includes/locale.inc	3 Apr 2008 07:55:01 -0000
@@ -116,7 +116,7 @@ function locale_languages_overview_form_
       $language->enabled = 0;
     }
     $language->weight = $form_state['values']['weight'][$langcode];
-    db_query("UPDATE {languages} SET enabled = %d, weight = %d WHERE language = '%s'", $language->enabled, $language->weight, $langcode);
+    db_query("UPDATE [{languages}] SET [enabled] = %d, [weight] = %d WHERE [language] = %s", $language->enabled, $language->weight, $langcode);
     $languages[$langcode] = $language;
   }
   drupal_set_message(t('Configuration saved.'));
@@ -195,7 +195,7 @@ function locale_languages_custom_form() 
  *   Language code of the language to edit.
  */
 function locale_languages_edit_form(&$form_state, $langcode) {
-  if ($language = db_fetch_object(db_query("SELECT * FROM {languages} WHERE language = '%s'", $langcode))) {
+  if ($language = db_fetch_object(db_query("SELECT * FROM [{languages}] WHERE [language] = %s", $langcode))) {
     $form = array();
     _locale_languages_common_controls($form, $language);
     $form['submit'] = array(
@@ -287,7 +287,7 @@ function _locale_languages_common_contro
 function locale_languages_predefined_form_validate($form, &$form_state) {
   $langcode = $form_state['values']['langcode'];
 
-  if ($duplicate = db_result(db_query("SELECT COUNT(*) FROM {languages} WHERE language = '%s'", $langcode)) != 0) {
+  if ($duplicate = db_result(db_query("SELECT COUNT(*) FROM [{languages}] WHERE [language] = %s", $langcode)) != 0) {
     form_set_error('langcode', t('The language %language (%code) already exists.', array('%language' => $form_state['values']['name'], '%code' => $langcode)));
   }
 
@@ -338,13 +338,13 @@ function locale_languages_edit_form_vali
   if (!empty($form_state['values']['domain']) && !empty($form_state['values']['prefix'])) {
     form_set_error('prefix', t('Domain and path prefix values should not be set at the same time.'));
   }
-  if (!empty($form_state['values']['domain']) && $duplicate = db_fetch_object(db_query("SELECT language FROM {languages} WHERE domain = '%s' AND language != '%s'", $form_state['values']['domain'], $form_state['values']['langcode']))) {
+  if (!empty($form_state['values']['domain']) && $duplicate = db_fetch_object(db_query("SELECT [language] FROM [{languages}] WHERE [domain] = %s AND [language] <> %s", $form_state['values']['domain'], $form_state['values']['langcode']))) {
     form_set_error('domain', t('The domain (%domain) is already tied to a language (%language).', array('%domain' => $form_state['values']['domain'], '%language' => $duplicate->language)));
   }
   if (empty($form_state['values']['prefix']) && language_default('language') != $form_state['values']['langcode'] && empty($form_state['values']['domain'])) {
     form_set_error('prefix', t('Only the default language can have both the domain and prefix empty.'));
   }
-  if (!empty($form_state['values']['prefix']) && $duplicate = db_fetch_object(db_query("SELECT language FROM {languages} WHERE prefix = '%s' AND language != '%s'", $form_state['values']['prefix'], $form_state['values']['langcode']))) {
+  if (!empty($form_state['values']['prefix']) && $duplicate = db_fetch_object(db_query("SELECT language FROM [{languages}] WHERE [prefix] = %s AND [language] <> %s", $form_state['values']['prefix'], $form_state['values']['langcode']))) {
     form_set_error('prefix', t('The prefix (%prefix) is already tied to a language (%language).', array('%prefix' => $form_state['values']['prefix'], '%language' => $duplicate->language)));
   }
 }
@@ -353,7 +353,7 @@ function locale_languages_edit_form_vali
  * Process the language editing form submission.
  */
 function locale_languages_edit_form_submit($form, &$form_state) {
-  db_query("UPDATE {languages} SET name = '%s', native = '%s', domain = '%s', prefix = '%s', direction = %d WHERE language = '%s'", $form_state['values']['name'], $form_state['values']['native'], $form_state['values']['domain'], $form_state['values']['prefix'], $form_state['values']['direction'], $form_state['values']['langcode']);
+  db_query("UPDATE [{languages}] SET [name] = %s, [native] = %s, [domain] = %s, [prefix] = %s, [direction] = %d WHERE [language] = %s", $form_state['values']['name'], $form_state['values']['native'], $form_state['values']['domain'], $form_state['values']['prefix'], $form_state['values']['direction'], $form_state['values']['langcode']);
   $default = language_default();
   if ($default->language == $form_state['values']['langcode']) {
     $properties = array('name', 'native', 'direction', 'enabled', 'plurals', 'formula', 'domain', 'prefix', 'weight');
@@ -411,13 +411,13 @@ function locale_languages_delete_form_su
   $languages = language_list();
   if (isset($languages[$form_state['values']['langcode']])) {
     // Remove translations first.
-    db_query("DELETE FROM {locales_target} WHERE language = '%s'", $form_state['values']['langcode']);
+    db_query("DELETE FROM [{locales_target}] WHERE [language] = %s", $form_state['values']['langcode']);
     cache_clear_all('locale:'. $form_state['values']['langcode'], 'cache');
     // With no translations, this removes existing JavaScript translations file.
     _locale_rebuild_js($form_state['values']['langcode']);
     // Remove the language.
-    db_query("DELETE FROM {languages} WHERE language = '%s'", $form_state['values']['langcode']);
-    db_query("UPDATE {node} SET language = '' WHERE language = '%s'", $form_state['values']['langcode']);
+    db_query("DELETE FROM [{languages}] WHERE [language] = %s", $form_state['values']['langcode']);
+    db_query("UPDATE [{node}] SET [language] = %s WHERE [language] = %s", '', $form_state['values']['langcode']);
     $variables = array('%locale' => $languages[$form_state['values']['langcode']]->name);
     drupal_set_message(t('The language %locale has been removed.', $variables));
     watchdog('locale', 'The language %locale has been removed.', $variables);
@@ -489,7 +489,7 @@ function locale_translate_overview_scree
   $headers = array_merge(array(t('Language')), array_values($groups));
 
   // Collect summaries of all source strings in all groups.
-  $sums = db_query("SELECT COUNT(*) AS strings, textgroup FROM {locales_source} GROUP BY textgroup");
+  $sums = db_query("SELECT COUNT(*) AS [strings], [textgroup] FROM [{locales_source}] GROUP BY [textgroup]");
   $groupsums = array();
   while ($group = db_fetch_object($sums)) {
     $groupsums[$group->textgroup] = $group->strings;
@@ -505,7 +505,7 @@ function locale_translate_overview_scree
   }
 
   // Languages with at least one record in the locale table.
-  $translations = db_query("SELECT COUNT(*) AS translation, t.language, s.textgroup FROM {locales_source} s INNER JOIN {locales_target} t ON s.lid = t.lid GROUP BY textgroup, language");
+  $translations = db_query("SELECT COUNT(*) AS [translation], t.[language], s.[textgroup] FROM [{locales_source}] s INNER JOIN [{locales_target}] t ON s.[lid] = t.[lid] GROUP BY [textgroup], [language]");
   while ($data = db_fetch_object($translations)) {
     $ratio = (!empty($groupsums[$data->textgroup]) && $data->translation > 0) ? round(($data->translation/$groupsums[$data->textgroup])*100., 2) : 0;
     $rows[$data->language][$data->textgroup] = $data->translation .'/'. $groupsums[$data->textgroup] ." ($ratio%)";
@@ -768,7 +768,7 @@ function locale_translate_export_po_form
  */
 function locale_translate_edit_form(&$form_state, $lid) {
   // Fetch source string, if possible.
-  $source = db_fetch_object(db_query('SELECT source, textgroup, location FROM {locales_source} WHERE lid = %d', $lid));
+  $source = db_fetch_object(db_query('SELECT [source], [textgroup], [location] FROM [{locales_source}] WHERE [lid] = %d', $lid));
   if (!$source) {
     drupal_set_message(t('String not found.'), 'error');
     drupal_goto('admin/build/translate/search');
@@ -815,7 +815,7 @@ function locale_translate_edit_form(&$fo
   }
 
   // Fetch translations and fill in default values in the form.
-  $result = db_query("SELECT DISTINCT translation, language FROM {locales_target} WHERE lid = %d AND language != '%s'", $lid, $omit);
+  $result = db_query("SELECT DISTINCT [translation], [language] FROM [{locales_target}] WHERE [lid] = %d AND [language] <> %s", $lid, $omit);
   while ($translation = db_fetch_object($result)) {
     $form['translations'][$translation->language]['#default_value'] = $translation->translation;
   }
@@ -831,19 +831,19 @@ function locale_translate_edit_form(&$fo
 function locale_translate_edit_form_submit($form, &$form_state) {
   $lid = $form_state['values']['lid'];
   foreach ($form_state['values']['translations'] as $key => $value) {
-    $translation = db_result(db_query("SELECT translation FROM {locales_target} WHERE lid = %d AND language = '%s'", $lid, $key));
+    $translation = db_result(db_query("SELECT [translation] FROM [{locales_target}] WHERE [lid] = %d AND [language] = %s", $lid, $key));
     if (!empty($value)) {
       // Only update or insert if we have a value to use.
       if (!empty($translation)) {
-        db_query("UPDATE {locales_target} SET translation = '%s' WHERE lid = %d AND language = '%s'", $value, $lid, $key);
+        db_query("UPDATE [{locales_target}] SET [translation] = %s WHERE [lid] = %d AND [language] = %s", $value, $lid, $key);
       }
       else {
-        db_query("INSERT INTO {locales_target} (lid, translation, language) VALUES (%d, '%s', '%s')", $lid, $value, $key);
+        db_query("INSERT INTO [{locales_target}] ([lid], [translation], [language]) VALUES (%d, %s, %s)", $lid, $value, $key);
       }
     }
     elseif (!empty($translation)) {
       // Empty translation entered: remove existing entry from database.
-      db_query("DELETE FROM {locales_target} WHERE lid = %d AND language = '%s'", $lid, $key);
+      db_query("DELETE FROM [{locales_target}] WHERE [lid] = %d AND [language] = %s", $lid, $key);
     }
 
     // Force JavaScript translation file recreation for this language.
@@ -871,8 +871,8 @@ function locale_translate_edit_form_subm
  * Delete a language string.
  */
 function locale_translate_delete($lid) {
-  db_query('DELETE FROM {locales_source} WHERE lid = %d', $lid);
-  db_query('DELETE FROM {locales_target} WHERE lid = %d', $lid);
+  db_query('DELETE FROM [{locales_source}] WHERE lid = %d', $lid);
+  db_query('DELETE FROM [{locales_target}] WHERE lid = %d', $lid);
   // Force JavaScript translation file recreation for all languages.
   _locale_invalidate_js();
   cache_clear_all('locale:', 'cache', TRUE);
@@ -924,7 +924,7 @@ function locale_add_language($langcode, 
     $direction = isset($predefined[$langcode][2]) ? $predefined[$langcode][2] : LANGUAGE_LTR;
   }
 
-  db_query("INSERT INTO {languages} (language, name, native, direction, domain, prefix, enabled) VALUES ('%s', '%s', '%s', %d, '%s', '%s', %d)", $langcode, $name, $native, $direction, $domain, $prefix, $enabled);
+  db_query("INSERT INTO [{languages}] ([language], [name], [native], [direction], [domain], [prefix], [enabled]) VALUES (%s, %s, %s, %d, %s, %s, %d)", $langcode, $name, $native, $direction, $domain, $prefix, $enabled);
 
   // Only set it as default if enabled.
   if ($enabled && $default) {
@@ -969,7 +969,7 @@ function _locale_import_po($file, $langc
   }
 
   // Check if we have the language already in the database.
-  if (!db_fetch_object(db_query("SELECT language FROM {languages} WHERE language = '%s'", $langcode))) {
+  if (!db_fetch_object(db_query("SELECT [language] FROM [{languages}] WHERE [language] = %s", $langcode))) {
     drupal_set_message(t('The language selected for import is not supported.'), 'error');
     return FALSE;
   }
@@ -1213,10 +1213,10 @@ function _locale_import_one_string($op, 
         // Get the plural formula and update in database.
         if (isset($header["Plural-Forms"]) && $p = _locale_import_parse_plural_forms($header["Plural-Forms"], $file->filename)) {
           list($nplurals, $plural) = $p;
-          db_query("UPDATE {languages} SET plurals = %d, formula = '%s' WHERE language = '%s'", $nplurals, $plural, $lang);
+          db_query("UPDATE [{languages}] SET [plurals] = %d, [formula] = %s WHERE [language] = %s", $nplurals, $plural, $lang);
         }
         else {
-          db_query("UPDATE {languages} SET plurals = %d, formula = '%s' WHERE language = '%s'", 0, '', $lang);
+          db_query("UPDATE [{languages}] SET [plurals] = %d, [formula] = %s WHERE [language] = %s", 0, '', $lang);
         }
         $headerdone = TRUE;
       }
@@ -1278,35 +1278,35 @@ function _locale_import_one_string($op, 
  *   The string ID of the existing string modified or the new string added.
  */
 function _locale_import_one_string_db(&$report, $langcode, $source, $translation, $textgroup, $location, $mode, $plid = NULL, $plural = NULL) {
-  $lid = db_result(db_query("SELECT lid FROM {locales_source} WHERE source = '%s' AND textgroup = '%s'", $source, $textgroup));
+  $lid = db_result(db_query("SELECT [lid] FROM [{locales_source}] WHERE [source] = %s AND [textgroup] = %s", $source, $textgroup));
 
   if (!empty($translation)) {
     if ($lid) {
       // We have this source string saved already.
-      db_query("UPDATE {locales_source} SET location = '%s' WHERE lid = %d", $location, $lid);
-      $exists = (bool) db_result(db_query("SELECT lid FROM {locales_target} WHERE lid = %d AND language = '%s'", $lid, $langcode));
+      db_query("UPDATE [{locales_source}] SET [location] = %s WHERE [lid] = %d", $location, $lid);
+      $exists = (bool) db_result(db_query("SELECT [lid] FROM [{locales_target}] WHERE [lid] = %d AND [language] = %s", $lid, $langcode));
       if (!$exists) {
         // No translation in this language.
-        db_query("INSERT INTO {locales_target} (lid, language, translation, plid, plural) VALUES (%d, '%s', '%s', %d, %d)", $lid, $langcode, $translation, $plid, $plural);
+        db_query("INSERT INTO [{locales_target}] ([lid], [language], [translation], [plid], [plural]) VALUES (%d, %s, %s, %d, %d)", $lid, $langcode, $translation, $plid, $plural);
         $report[0]++;
       }
       else if ($mode == LOCALE_IMPORT_OVERWRITE) {
         // Translation exists, only overwrite if instructed.
-        db_query("UPDATE {locales_target} SET translation = '%s', plid = %d, plural = %d WHERE language = '%s' AND lid = %d", $translation, $plid, $plural, $langcode, $lid);
+        db_query("UPDATE [{locales_target}] SET [translation] = %s, [plid] = %d, [plural] = %d WHERE [language] = %s AND [lid] = %d", $translation, $plid, $plural, $langcode, $lid);
         $report[1]++;
       }
     }
     else {
       // No such source string in the database yet.
-      db_query("INSERT INTO {locales_source} (location, source, textgroup) VALUES ('%s', '%s', '%s')", $location, $source, $textgroup);
-      $lid = db_result(db_query("SELECT lid FROM {locales_source} WHERE source = '%s' AND textgroup = '%s'", $source, $textgroup));
-      db_query("INSERT INTO {locales_target} (lid, language, translation, plid, plural) VALUES (%d, '%s', '%s', %d, %d)", $lid, $langcode, $translation, $plid, $plural);
+      db_query("INSERT INTO [{locales_source}] ([location], [source], [textgroup]) VALUES (%s, %s, %s)", $location, $source, $textgroup);
+      $lid = db_result(db_query("SELECT [lid] FROM [{locales_source}] WHERE [source] = %s AND [textgroup] = %s", $source, $textgroup));
+      db_query("INSERT INTO [{locales_target}] ([lid], [language], [translation], [plid], [plural]) VALUES (%d, %s, %s, %d, %d)", $lid, $langcode, $translation, $plid, $plural);
       $report[0]++;
     }
   }
   elseif ($mode == LOCALE_IMPORT_OVERWRITE) {
     // Empty translation, remove existing if instructed.
-    db_query("DELETE FROM {locales_target} WHERE language = '%s' AND lid = %d AND plid = %d AND plural = %d", $translation, $langcode, $lid, $plid, $plural);
+    db_query("DELETE FROM [{locales_target}] WHERE [language] = %s AND [lid] = %d AND [plid] = %d AND [plural] = %d", $translation, $langcode, $lid, $plid, $plural);
     $report[2]++;
   }
 
@@ -1642,7 +1642,7 @@ function _locale_parse_js_file($filepath
       // Remove the quotes and string concatenations from the string.
       $string = implode('', preg_split('~(?<!\\\\)[\'"]\s*\+\s*[\'"]~s', substr($string, 1, -1)));
 
-      $result = db_query("SELECT lid, location FROM {locales_source} WHERE source = '%s' AND textgroup = 'default'", $string);
+      $result = db_query("SELECT [lid], [location] FROM [{locales_source}] WHERE [source] = %s AND [textgroup] = 'default'", $string);
       if ($source = db_fetch_object($result)) {
         // We already have this source string and now have to add the location
         // to the location column, if this file is not yet present in there.
@@ -1653,12 +1653,12 @@ function _locale_parse_js_file($filepath
           $locations = implode('; ', $locations);
 
           // Save the new locations string to the database.
-          db_query("UPDATE {locales_source} SET location = '%s' WHERE lid = %d", $locations, $source->lid);
+          db_query("UPDATE [{locales_source}] SET [location] = %s WHERE [lid] = %d", $locations, $source->lid);
         }
       }
       else {
         // We don't have the source string yet, thus we insert it into the database.
-        db_query("INSERT INTO {locales_source} (location, source, textgroup) VALUES ('%s', '%s', 'default')", $filepath, $string);
+        db_query("INSERT INTO [{locales_source}] ([location], [source], [textgroup]) VALUES (%s, %s, 'default')", $filepath, $string);
       }
     }
   }
@@ -1682,10 +1682,10 @@ function _locale_parse_js_file($filepath
  */
 function _locale_export_get_strings($language = NULL, $group = 'default') {
   if (isset($language)) {
-    $result = db_query("SELECT s.lid, s.source, s.location, t.translation, t.plid, t.plural FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid AND t.language = '%s' WHERE s.textgroup = '%s' ORDER BY t.plid, t.plural", $language->language, $group);
+    $result = db_query("SELECT s.[lid], s.[source], s.[location], t.[translation], t.[plid], t.[plural] FROM [{locales_source}] s LEFT JOIN [{locales_target}] t ON s.[lid] = t.[lid] AND t.[language] = %s WHERE s.[textgroup] = %s ORDER BY t.[plid], t.[plural]", $language->language, $group);
   }
   else {
-    $result = db_query("SELECT s.lid, s.source, s.location, t.plid, t.plural FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid WHERE s.textgroup = '%s' ORDER BY t.plid, t.plural", $group);
+    $result = db_query("SELECT s.[lid], s.[source], s.[location], t.[plid], t.[plural] FROM [{locales_source}] s LEFT JOIN [{locales_target}] t ON s.[lid] = t.[lid] WHERE s.[textgroup] = %s ORDER BY t.[plid], t.[plural]", $group);
   }
   $strings = array();
   while ($child = db_fetch_object($result)) {
@@ -1913,41 +1913,41 @@ function _locale_translate_seek() {
 
   // We have at least one criterion to match
   if ($query = _locale_translate_seek_query()) {
-    $join = "SELECT s.source, s.location, s.lid, s.textgroup, t.translation, t.language FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid ";
+    $join = "SELECT s.[source], s.[location], s.[lid], s.[textgroup], t.[translation], t.[language] FROM [{locales_source}] s LEFT JOIN [{locales_target}] t ON s.[lid] = t.[lid] ";
 
     $arguments = array();
     $limit_language = FALSE;
     // Compute LIKE section
     switch ($query['translation']) {
       case 'translated':
-        $where = "WHERE (t.translation LIKE '%%%s%%')";
-        $orderby = "ORDER BY t.translation";
-        $arguments[] = $query['string'];
+        $where = "WHERE (t.[translation] LIKE %s)";
+        $orderby = "ORDER BY t.[translation]";
+        $arguments[] = "%". $query['string'] ."%";
         break;
       case 'untranslated':
-        $where = "WHERE (s.source LIKE '%%%s%%' AND t.translation IS NULL)";
-        $orderby = "ORDER BY s.source";
-        $arguments[] = $query['string'];
+        $where = "WHERE (s.[source] LIKE %s AND t.[translation] IS NULL)";
+        $orderby = "ORDER BY s.[source]";
+        $arguments[] = "%". $query['string'] ."%";
         break;
       case 'all' :
       default:
-        $where = "WHERE (s.source LIKE '%%%s%%' OR t.translation LIKE '%%%s%%')";
+        $where = "WHERE (s.[source] LIKE %s OR t.[translation] LIKE %s)";
         $orderby = '';
-        $arguments[] = $query['string'];
-        $arguments[] = $query['string'];
+        $arguments[] = "%". $query['string'] ."%";
+        $arguments[] = "%". $query['string'] ."%";
         break;
     }
     $grouplimit = '';
     if (!empty($query['group']) && $query['group'] != 'all') {
-      $grouplimit = " AND s.textgroup = '%s'";
+      $grouplimit = " AND s.[textgroup] = %s";
       $arguments[] = $query['group'];
     }
 
     switch ($query['language']) {
       // Force search in source strings
       case "en":
-        $sql = $join ." WHERE s.source LIKE '%%%s%%' $grouplimit ORDER BY s.source";
-        $arguments = array($query['string']); // $where is not used, discard its arguments
+        $sql = $join ." WHERE s.[source] LIKE %s $grouplimit ORDER BY s.[source]";
+        $arguments = array("%". $query['string'] ."%"); // $where is not used, discard its arguments
         if (!empty($grouplimit)) {
           $arguments[] = $query['group'];
         }
@@ -1958,7 +1958,7 @@ function _locale_translate_seek() {
         break;
       // Some different language
       default:
-        $sql = "$join AND t.language = '%s' $where $grouplimit $orderby";
+        $sql = "$join AND t.[language] = %s $where $grouplimit $orderby";
         array_unshift($arguments, $query['language']);
         // Don't show translation flags for other languages, we can't see them with this search.
         $limit_language = $query['language'];
@@ -2068,7 +2068,7 @@ function _locale_rebuild_js($langcode = 
 
   // Construct the array for JavaScript translations.
   // We sort on plural so that we have all plural forms before singular forms.
-  $result = db_query("SELECT s.lid, s.source, t.plid, t.plural, t.translation FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid AND t.language = '%s' WHERE s.location LIKE '%%.js%%' AND s.textgroup = 'default' ORDER BY t.plural DESC", $language->language);
+  $result = db_query("SELECT s.[lid], s.[source], t.[plid], t.[plural], t.[translation] FROM [{locales_source}] s LEFT JOIN [{locales_target}] t ON s.[lid] = t.[lid] AND t.[language] = %s WHERE s.[location] LIKE %s AND s.[textgroup] = 'default' ORDER BY t.[plural] DESC", $language->language, '%.js%');
 
   $translations = $plurals = array();
   while ($data = db_fetch_object($result)) {
@@ -2143,14 +2143,14 @@ function _locale_rebuild_js($langcode = 
   // Save the new JavaScript hash (or an empty value if the file
   // just got deleted). Act only if some operation was executed.
   if ($status) {
-    db_query("UPDATE {languages} SET javascript = '%s' WHERE language = '%s'", $language->javascript, $language->language);
+    db_query("UPDATE [{languages}] SET [javascript] = %s WHERE [language] = %s", $language->javascript, $language->language);
 
     // Update the default language variable if the default language has been altered.
     // This is necessary to keep the variable consistent with the database
     // version of the language and to prevent checking against an outdated hash.
     $default_langcode = language_default('language');
     if ($default_langcode == $language->language) {
-      $default = db_fetch_object(db_query("SELECT * FROM {languages} WHERE language = '%s'", $default_langcode));
+      $default = db_fetch_object(db_query("SELECT * FROM [{languages}] WHERE [language] = %s", $default_langcode));
       variable_set('language_default', $default);
     }
   }
@@ -2440,7 +2440,7 @@ function locale_batch_by_language($langc
   // Collect all files to import for all enabled modules and themes.
   $files = array();
   $components = array();
-  $query = "SELECT name, filename FROM {system} WHERE status = 1";
+  $query = "SELECT [name], [filename] FROM [{system}] WHERE [status] = 1";
   if (count($skip)) {
     $query .= " AND name NOT IN (". db_placeholders($skip, 'varchar') .")";
   }
@@ -2475,7 +2475,7 @@ function locale_batch_by_component($comp
   if (count($languages[1])) {
     $language_list = join('|', array_keys($languages[1]));
     // Collect all files to import for all $components.
-    $result = db_query("SELECT name, filename FROM {system} WHERE status = 1");
+    $result = db_query("SELECT [name], [filename] FROM [{system}] WHERE [status] = 1");
     while ($component = db_fetch_object($result)) {
       if (in_array($component->name, $components)) {
         // Collect all files for this component in all enabled languages, named
@@ -2536,7 +2536,7 @@ function _locale_batch_build($files, $fi
  *   Contains a list of files imported.
  */
 function _locale_batch_import($filepath, &$context) {
-  // The filename is either {langcode}.po or {prefix}.{langcode}.po, so
+  // The filename is either [{langcode}].po or [{prefix}].[{langcode}].po, so
   // we can extract the language code to use for the import from the end.
   if (preg_match('!(/|\.)([^\./]+)\.po$!', $filepath, $langcode)) {
     $file = (object) array('filename' => basename($filepath), 'filepath' => $filepath);
Index: includes/mail.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/mail.inc,v
retrieving revision 1.8
diff -u -p -r1.8 mail.inc
--- includes/mail.inc	25 Jan 2008 17:04:00 -0000	1.8
+++ includes/mail.inc	3 Apr 2008 07:55:02 -0000
@@ -433,7 +433,7 @@ function _drupal_wrap_mail_line(&$line, 
 function _drupal_html_to_mail_urls($match = NULL, $reset = FALSE) {
   global $base_url, $base_path;
   static $urls = array(), $regexp;
-  
+
   if ($reset) {
     // Reset internal URL list.
     $urls = array();
Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.255.2.9
diff -u -p -r1.255.2.9 menu.inc
--- includes/menu.inc	27 Feb 2008 12:12:01 -0000	1.255.2.9
+++ includes/menu.inc	3 Apr 2008 07:55:02 -0000
@@ -196,7 +196,7 @@ define('MENU_MAX_DEPTH', 9);
  *   array('node', '12345', 'edit').
  * @return
  *   An array which contains the ancestors and placeholders. Placeholders
- *   simply contain as many '%s' as the ancestors.
+ *   simply contain as many %s as the ancestors.
  */
 function menu_get_ancestors($parts) {
   $number_parts = count($parts);
@@ -227,7 +227,7 @@ function menu_get_ancestors($parts) {
         $current .= '/';
       }
     }
-    $placeholders[] = "'%s'";
+    $placeholders[] = "%s";
     $ancestors[] = $current;
   }
   return array($ancestors, $placeholders);
@@ -312,7 +312,7 @@ function menu_get_item($path = NULL, $ro
     $parts = array_slice($original_map, 0, MENU_MAX_PARTS);
     list($ancestors, $placeholders) = menu_get_ancestors($parts);
 
-    if ($router_item = db_fetch_array(db_query_range('SELECT * FROM {menu_router} WHERE path IN ('. implode (',', $placeholders) .') ORDER BY fit DESC', $ancestors, 0, 1))) {
+    if ($router_item = db_fetch_array(db_query_range('SELECT * FROM [{menu_router}] WHERE [path] IN ('. implode (',', $placeholders) .') ORDER BY [fit] DESC', $ancestors, 0, 1))) {
       $map = _menu_translate($router_item, $original_map);
       if ($map === FALSE) {
         $router_items[$path] = FALSE;
@@ -362,7 +362,7 @@ function menu_execute_active_handler($pa
  * @return
  *   Returns TRUE for success, FALSE if an object cannot be loaded.
  *   Names of object loading functions are placed in $item['load_functions'].
- *   Loaded objects are placed in $map[]; keys are the same as keys in the 
+ *   Loaded objects are placed in $map[]; keys are the same as keys in the
  *   $item['load_functions'] array.
  *   $item['access'] is set to FALSE if an object cannot be loaded.
  */
@@ -471,10 +471,10 @@ function _menu_check_access(&$item, $map
  * @return
  *   No return value.
  *   $item['title'] is localized according to $item['title_callback'].
- *   If an item's callback is check_plain(), $item['options']['html'] becomes 
+ *   If an item's callback is check_plain(), $item['options']['html'] becomes
  *   TRUE.
  *   $item['description'] is translated using t().
- *   When doing link translation and the $item['options']['attributes']['title'] 
+ *   When doing link translation and the $item['options']['attributes']['title']
  *   (link title attribute) matches the description, it is translated as well.
  */
 function _menu_item_localize(&$item, $map, $link_translate = FALSE) {
@@ -652,14 +652,14 @@ function _menu_link_translate(&$item) {
 
     _menu_item_localize($item, $map, TRUE);
   }
-  
+
   // Allow other customizations - e.g. adding a page-specific query string to the
   // options array. For performance reasons we only invoke this hook if the link
   // has the 'alter' flag set in the options array.
   if (!empty($item['options']['alter'])) {
     drupal_alter('translated_menu_link', $item, $map);
   }
-  
+
   return $map;
 }
 
@@ -776,7 +776,7 @@ function menu_tree_all_data($menu_name =
   $cid = 'links:'. $menu_name .':all:'. $mlid;
 
   if (!isset($tree[$cid])) {
-    // If the static variable doesn't have the data, check {cache_menu}.
+    // If the static variable doesn't have the data, check [{cache_menu}].
     $cache = cache_get($cid, 'cache_menu');
     if ($cache && isset($cache->data)) {
       $data = $cache->data;
@@ -792,7 +792,7 @@ function menu_tree_all_data($menu_name =
         }
         $args = array_unique($args);
         $placeholders = implode(', ', array_fill(0, count($args), '%d'));
-        $where = ' AND ml.plid IN ('. $placeholders .')';
+        $where = ' AND ml.[plid] IN ('. $placeholders .')';
         $parents = $args;
         $parents[] = $item['mlid'];
       }
@@ -804,13 +804,13 @@ function menu_tree_all_data($menu_name =
       }
       array_unshift($args, $menu_name);
       // Select the links from the table, and recursively build the tree.  We
-      // LEFT JOIN since there is no match in {menu_router} for an external
+      // LEFT JOIN since there is no match in [{menu_router}] for an external
       // link.
       $data['tree'] = menu_tree_data(db_query("
-        SELECT m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.title, m.title_callback, m.title_arguments, m.type, m.description, ml.*
-        FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
-        WHERE ml.menu_name = '%s'". $where ."
-        ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC", $args), $parents);
+        SELECT m.[load_functions], m.[to_arg_functions], m.[access_callback], m.[access_arguments], m.[page_callback], m.[page_arguments], m.[title], m.[title_callback], m.[title_arguments], m.[type], m.[description], ml.*
+        FROM [{menu_links}] ml LEFT JOIN [{menu_router}] m ON m.[path] = ml.[router_path]
+        WHERE ml.[menu_name] = %s". $where ."
+        ORDER BY [p1] ASC, [p2] ASC, [p3] ASC, [p4] ASC, [p5] ASC, [p6] ASC, [p7] ASC, [p8] ASC, [p9] ASC", $args), $parents);
       $data['node_links'] = array();
       menu_tree_collect_node_links($data['tree'], $data['node_links']);
       // Cache the data.
@@ -848,7 +848,7 @@ function menu_tree_page_data($menu_name 
     $cid = 'links:'. $menu_name .':page:'. $item['href'] .':'. (int)$item['access'];
 
     if (!isset($tree[$cid])) {
-      // If the static variable doesn't have the data, check {cache_menu}.
+      // If the static variable doesn't have the data, check [{cache_menu}].
       $cache = cache_get($cid, 'cache_menu');
       if ($cache && isset($cache->data)) {
         $data = $cache->data;
@@ -858,17 +858,17 @@ function menu_tree_page_data($menu_name 
         if ($item['access']) {
           // Check whether a menu link exists that corresponds to the current path.
           $args = array($menu_name, $item['href']);
-          $placeholders = "'%s'";
+          $placeholders = "%s";
           if (drupal_is_front_page()) {
             $args[] = '<front>';
-            $placeholders .= ", '%s'";
+            $placeholders .= ", %s";
           }
-          $parents = db_fetch_array(db_query("SELECT p1, p2, p3, p4, p5, p6, p7, p8 FROM {menu_links} WHERE menu_name = '%s' AND link_path IN (". $placeholders .")", $args));
+          $parents = db_fetch_array(db_query("SELECT [p1], [p2], [p3], [p4], [p5], [p6], [p7], [p8] FROM [{menu_links}] WHERE [menu_name] = %s AND [link_path] IN (". $placeholders .")", $args));
 
           if (empty($parents)) {
             // If no link exists, we may be on a local task that's not in the links.
             // TODO: Handle the case like a local task on a specific node in the menu.
-            $parents = db_fetch_array(db_query("SELECT p1, p2, p3, p4, p5, p6, p7, p8 FROM {menu_links} WHERE menu_name = '%s' AND link_path = '%s'", $menu_name, $item['tab_root']));
+            $parents = db_fetch_array(db_query("SELECT [p1], [p2], [p3], [p4], [p5], [p6], [p7], [p8] FROM [{menu_links}] WHERE [menu_name] = %s AND [link_path] = %s", $menu_name, $item['tab_root']));
           }
           // We always want all the top-level links with plid == 0.
           $parents[] = '0';
@@ -882,7 +882,7 @@ function menu_tree_page_data($menu_name 
             // Collect all the links set to be expanded, and then add all of
             // their children to the list as well.
             do {
-              $result = db_query("SELECT mlid FROM {menu_links} WHERE menu_name = '%s' AND expanded = 1 AND has_children = 1 AND plid IN (". $placeholders .') AND mlid NOT IN ('. $placeholders .')', array_merge(array($menu_name), $args, $args));
+              $result = db_query("SELECT [mlid] FROM [{menu_links}] WHERE [menu_name] = %s AND [expanded] = 1 AND [has_children] = 1 AND [plid] IN (". $placeholders .') AND [mlid] NOT IN ('. $placeholders .')', array_merge(array($menu_name), $args, $args));
               $num_rows = FALSE;
               while ($item = db_fetch_array($result)) {
                 $args[] = $item['mlid'];
@@ -900,13 +900,13 @@ function menu_tree_page_data($menu_name 
           $parents = array();
         }
         // Select the links from the table, and recursively build the tree. We
-        // LEFT JOIN since there is no match in {menu_router} for an external
+        // LEFT JOIN since there is no match in [{menu_router}] for an external
         // link.
         $data['tree'] = menu_tree_data(db_query("
-          SELECT m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.title, m.title_callback, m.title_arguments, m.type, m.description, ml.*
-          FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
-          WHERE ml.menu_name = '%s' AND ml.plid IN (". $placeholders .")
-          ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC", $args), $parents);
+          SELECT m.[load_functions], m.[to_arg_functions], m.[access_callback], m.[access_arguments], m.[page_callback], m.[page_arguments], m.[title], m.[title_callback], m.[title_arguments], m.[type], m.[description], ml.*
+          FROM [{menu_links}] ml LEFT JOIN [{menu_router}] m ON m.[path] = ml.[router_path]
+          WHERE ml.[menu_name] = %s AND ml.[plid] IN (". $placeholders .")
+          ORDER BY [p1] ASC, [p2] ASC, [p3] ASC, [p4] ASC, [p5] ASC, [p6] ASC, [p7] ASC, [p8] ASC, [p9] ASC", $args), $parents);
         $data['node_links'] = array();
         menu_tree_collect_node_links($data['tree'], $data['node_links']);
         // Cache the data.
@@ -949,7 +949,7 @@ function menu_tree_check_access(&$tree, 
     // Use db_rewrite_sql to evaluate view access without loading each full node.
     $nids = array_keys($node_links);
     $placeholders = '%d'. str_repeat(', %d', count($nids) - 1);
-    $result = db_query(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.status = 1 AND n.nid IN (". $placeholders .")"), $nids);
+    $result = db_query(db_rewrite_sql("SELECT n.[nid] FROM [{node}] n WHERE n.[status] = 1 AND n.[nid] IN (". $placeholders .")"), $nids);
     while ($node = db_fetch_array($result)) {
       $nid = $node['nid'];
       foreach ($node_links[$nid] as $mlid => $link) {
@@ -1153,7 +1153,7 @@ function menu_get_names($reset = FALSE) 
 
   if ($reset || empty($names)) {
     $names = array();
-    $result = db_query("SELECT DISTINCT(menu_name) FROM {menu_links} ORDER BY menu_name");
+    $result = db_query("SELECT DISTINCT([menu_name]) FROM [{menu_links}] ORDER BY [menu_name]");
     while ($name = db_fetch_array($result)) {
       $names[] = $name['menu_name'];
     }
@@ -1259,7 +1259,7 @@ function menu_local_tasks($level = 0, $r
       return '';
     }
     // Get all tabs and the root page.
-    $result = db_query("SELECT * FROM {menu_router} WHERE tab_root = '%s' ORDER BY weight, title", $router_item['tab_root']);
+    $result = db_query("SELECT * FROM [{menu_router}] WHERE [tab_root] = %s ORDER BY [weight], [title]", $router_item['tab_root']);
     $map = arg();
     $children = array();
     $tasks = array();
@@ -1515,7 +1515,7 @@ function menu_get_active_trail() {
  */
 function menu_get_active_breadcrumb() {
   $breadcrumb = array();
-  
+
   // No breadcrumb for the front page.
   if (drupal_is_front_page()) {
     return $breadcrumb;
@@ -1565,7 +1565,7 @@ function menu_get_active_title() {
  *   rendering.
  */
 function menu_link_load($mlid) {
-  if (is_numeric($mlid) && $item = db_fetch_array(db_query("SELECT m.*, ml.* FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = %d", $mlid))) {
+  if (is_numeric($mlid) && $item = db_fetch_array(db_query("SELECT m.*, ml.* FROM [{menu_links}] ml LEFT JOIN [{menu_router}] m ON m.[path] = ml.[router_path] WHERE ml.[mlid] = %d", $mlid))) {
     _menu_link_translate($item);
     return $item;
   }
@@ -1629,7 +1629,7 @@ function menu_router_build($reset = FALS
       $menu = $cache->data;
     }
     else {
-      db_query('DELETE FROM {menu_router}');
+      db_query('DELETE FROM [{menu_router}]');
       // We need to manually call each module so that we can know which module
       // a given item came from.
       $callbacks = array();
@@ -1662,7 +1662,7 @@ function _menu_link_build($item) {
     $item['hidden'] = 1;
   }
   // Note, we set this as 'system', so that we can be sure to distinguish all
-  // the menu links generated automatically from entries in {menu_router}.
+  // the menu links generated automatically from entries in [{menu_router}].
   $item['module'] = 'system';
   $item += array(
     'menu_name' => 'navigation',
@@ -1692,7 +1692,7 @@ function _menu_navigation_links_rebuild(
     array_multisort($sort, SORT_NUMERIC, $menu_links);
 
     foreach ($menu_links as $item) {
-      $existing_item = db_fetch_array(db_query("SELECT mlid, menu_name, plid, customized, has_children, updated FROM {menu_links} WHERE link_path = '%s' AND module = '%s'", $item['link_path'], 'system'));
+      $existing_item = db_fetch_array(db_query("SELECT [mlid], [menu_name], [plid], [customized], [has_children], [updated] FROM [{menu_links}] WHERE [link_path] = %s AND [module] = %s", $item['link_path'], 'system'));
       if ($existing_item) {
         $item['mlid'] = $existing_item['mlid'];
         $item['menu_name'] = $existing_item['menu_name'];
@@ -1708,18 +1708,18 @@ function _menu_navigation_links_rebuild(
   $placeholders = db_placeholders($menu, 'varchar');
   $paths = array_keys($menu);
   // Updated and customized items whose router paths are gone need new ones.
-  $result = db_query("SELECT ml.link_path, ml.mlid, ml.router_path, ml.updated FROM {menu_links} ml WHERE ml.updated = 1 OR (router_path NOT IN ($placeholders) AND external = 0 AND customized = 1)", $paths);
+  $result = db_query("SELECT ml.[link_path], ml.[mlid], ml.[router_path], ml.[updated] FROM [{menu_links}] ml WHERE ml.[updated] = 1 OR ([router_path] NOT IN ($placeholders) AND [external] = 0 AND [customized] = 1)", $paths);
   while ($item = db_fetch_array($result)) {
     $router_path = _menu_find_router_path($menu, $item['link_path']);
     if (!empty($router_path) && ($router_path != $item['router_path'] || $item['updated'])) {
       // If the router path and the link path matches, it's surely a working
       // item, so we clear the updated flag.
       $updated = $item['updated'] && $router_path != $item['link_path'];
-      db_query("UPDATE {menu_links} SET router_path = '%s', updated = %d WHERE mlid = %d", $router_path, $updated, $item['mlid']);
+      db_query("UPDATE [{menu_links}] SET [router_path] = %s, [updated] = %d WHERE [mlid] = %d", $router_path, $updated, $item['mlid']);
     }
   }
   // Find any item whose router path does not exist any more.
-  $result = db_query("SELECT * FROM {menu_links} WHERE router_path NOT IN ($placeholders) AND external = 0 AND updated = 0 AND customized = 0 ORDER BY depth DESC", $paths);
+  $result = db_query("SELECT * FROM [{menu_links}] WHERE [router_path] NOT IN ($placeholders) AND [external] = 0 AND [updated] = 0 AND [customized] = 0 ORDER BY [depth] DESC", $paths);
   // Remove all such items. Starting from those with the greatest depth will
   // minimize the amount of re-parenting done by menu_link_delete().
   while ($item = db_fetch_array($result)) {
@@ -1737,10 +1737,10 @@ function _menu_navigation_links_rebuild(
  */
 function menu_link_delete($mlid, $path = NULL) {
   if (isset($mlid)) {
-    _menu_delete_item(db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $mlid)));
+    _menu_delete_item(db_fetch_array(db_query("SELECT * FROM [{menu_links}] WHERE [mlid] = %d", $mlid)));
   }
   else {
-    $result = db_query("SELECT * FROM {menu_links} WHERE link_path = '%s'", $path);
+    $result = db_query("SELECT * FROM [{menu_links}] WHERE [link_path] = %s", $path);
     while ($link = db_fetch_array($result)) {
       _menu_delete_item($link);
     }
@@ -1759,14 +1759,14 @@ function _menu_delete_item($item, $force
   if ($item && ($item['module'] != 'system' || $item['updated'] || $force)) {
     // Children get re-attached to the item's parent.
     if ($item['has_children']) {
-      $result = db_query("SELECT mlid FROM {menu_links} WHERE plid = %d", $item['mlid']);
+      $result = db_query("SELECT [mlid] FROM [{menu_links}] WHERE [plid] = %d", $item['mlid']);
       while ($m = db_fetch_array($result)) {
         $child = menu_link_load($m['mlid']);
         $child['plid'] = $item['plid'];
         menu_link_save($child);
       }
     }
-    db_query('DELETE FROM {menu_links} WHERE mlid = %d', $item['mlid']);
+    db_query('DELETE FROM [{menu_links}] WHERE [mlid] = %d', $item['mlid']);
 
     // Update the has_children status of the parent.
     _menu_update_parental_status($item);
@@ -1812,34 +1812,34 @@ function menu_link_save(&$item) {
   );
   $existing_item = FALSE;
   if (isset($item['mlid'])) {
-    $existing_item = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['mlid']));
+    $existing_item = db_fetch_array(db_query("SELECT * FROM [{menu_links}] WHERE [mlid] = %d", $item['mlid']));
   }
 
   if (isset($item['plid'])) {
-    $parent = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['plid']));
+    $parent = db_fetch_array(db_query("SELECT * FROM [{menu_links}] WHERE [mlid] = %d", $item['plid']));
   }
   else {
     // Find the parent - it must be unique.
     $parent_path = $item['link_path'];
-    $where = "WHERE link_path = '%s'";
+    $where = "WHERE [link_path] = %s";
     // Only links derived from router items should have module == 'system', and
     // we want to find the parent even if it's in a different menu.
     if ($item['module'] == 'system') {
-      $where .= " AND module = '%s'";
+      $where .= " AND [module] = %s";
       $arg2 = 'system';
     }
     else {
       // If not derived from a router item, we respect the specified menu name.
-      $where .= " AND menu_name = '%s'";
+      $where .= " AND [menu_name] = %s";
       $arg2 = $item['menu_name'];
     }
     do {
       $parent = FALSE;
       $parent_path = substr($parent_path, 0, strrpos($parent_path, '/'));
-      $result = db_query("SELECT COUNT(*) FROM {menu_links} ". $where, $parent_path, $arg2);
+      $result = db_query("SELECT COUNT(*) FROM [{menu_links}] ". $where, $parent_path, $arg2);
       // Only valid if we get a unique result.
       if (db_result($result) == 1) {
-        $parent = db_fetch_array(db_query("SELECT * FROM {menu_links} ". $where, $parent_path, $arg2));
+        $parent = db_fetch_array(db_query("SELECT * FROM [{menu_links}] ". $where, $parent_path, $arg2));
       }
     } while ($parent === FALSE && $parent_path);
   }
@@ -1857,21 +1857,10 @@ function menu_link_save(&$item) {
   }
 
   if (!$existing_item) {
-    db_query("INSERT INTO {menu_links} (
-       menu_name, plid, link_path,
-      hidden, external, has_children,
-      expanded, weight,
-      module, link_title, options,
-      customized, updated) VALUES (
-      '%s', %d, '%s',
-      %d, %d, %d,
-      %d, %d,
-      '%s', '%s', '%s', %d, %d)",
-      $item['menu_name'], $item['plid'], $item['link_path'],
-      $item['hidden'], $item['_external'], $item['has_children'],
-      $item['expanded'], $item['weight'],
-      $item['module'],  $item['link_title'], serialize($item['options']),
-      $item['customized'], $item['updated']);
+    $values = $item;
+    $values['external'] = $item['_external'];
+    $values['options'] = serialize($item['options']);
+    drupal_write_record('menu_links', $values);
     $item['mlid'] = db_last_insert_id('menu_links', 'mlid');
   }
 
@@ -1912,16 +1901,10 @@ function menu_link_save(&$item) {
       $item['router_path'] = _menu_find_router_path($menu, $item['link_path']);
     }
   }
-  db_query("UPDATE {menu_links} SET menu_name = '%s', plid = %d, link_path = '%s',
-    router_path = '%s', hidden = %d, external = %d, has_children = %d,
-    expanded = %d, weight = %d, depth = %d,
-    p1 = %d, p2 = %d, p3 = %d, p4 = %d, p5 = %d, p6 = %d, p7 = %d, p8 = %d, p9 = %d,
-    module = '%s', link_title = '%s', options = '%s', customized = %d WHERE mlid = %d",
-    $item['menu_name'], $item['plid'], $item['link_path'],
-    $item['router_path'], $item['hidden'], $item['_external'], $item['has_children'],
-    $item['expanded'], $item['weight'],  $item['depth'],
-    $item['p1'], $item['p2'], $item['p3'], $item['p4'], $item['p5'], $item['p6'], $item['p7'], $item['p8'], $item['p9'],
-    $item['module'],  $item['link_title'], serialize($item['options']), $item['customized'], $item['mlid']);
+  $values = $item;
+  $values['external'] = $item['_external'];
+  $values['options'] = serialize($item['options']);
+  drupal_write_record('menu_links', $values, 'mlid');
   // Check the has_children status of the parent.
   _menu_update_parental_status($item);
   menu_cache_clear($menu_name);
@@ -1960,7 +1943,7 @@ function _menu_clear_page_cache() {
  */
 function _menu_set_expanded_menus() {
   $names = array();
-  $result = db_query("SELECT menu_name FROM {menu_links} WHERE expanded != 0 GROUP BY menu_name");
+  $result = db_query("SELECT [menu_name] FROM [{menu_links}] WHERE [expanded] <> 0 GROUP BY [menu_name]");
   while ($n = db_fetch_array($result)) {
     $names[] = $n['menu_name'];
   }
@@ -2019,7 +2002,7 @@ function menu_link_maintain($module, $op
       return menu_link_save($menu_link);
       break;
     case 'update':
-      db_query("UPDATE {menu_links} SET link_title = '%s' WHERE link_path = '%s' AND customized = 0 AND module = '%s'", $link_title, $link_path, $module);
+      db_query("UPDATE [{menu_links}] SET [link_title] = %s WHERE [link_path] = %s AND [customized] = 0 AND [module]  = %s", $link_title, $link_path, $module);
       menu_cache_clear();
       break;
     case 'delete':
@@ -2046,12 +2029,12 @@ function menu_link_children_relative_dep
   $args[] = $item['menu_name'];
   $p = 'p1';
   while ($i <= MENU_MAX_DEPTH && $item[$p]) {
-    $match .= " AND $p = %d";
+    $match .= " AND [$p] = %d";
     $args[] = $item[$p];
     $p = 'p'. ++$i;
   }
 
-  $max_depth = db_result(db_query_range("SELECT depth FROM {menu_links} WHERE menu_name = '%s'". $match ." ORDER BY depth DESC", $args, 0, 1));
+  $max_depth = db_result(db_query_range("SELECT [depth] FROM [{menu_links}] WHERE [menu_name] = %s". $match ." ORDER BY [depth] DESC", $args, 0, 1));
 
   return ($max_depth > $item['depth']) ? $max_depth - $item['depth'] : 0;
 }
@@ -2065,26 +2048,26 @@ function menu_link_children_relative_dep
 function _menu_link_move_children($item, $existing_item) {
 
   $args[] = $item['menu_name'];
-  $set[] = "menu_name = '%s'";
+  $set[] = "[menu_name] = %s";
 
   $i = 1;
   while ($i <= $item['depth']) {
     $p = 'p'. $i++;
-    $set[] = "$p = %d";
+    $set[] = "[$p] = %d";
     $args[] = $item[$p];
   }
   $j = $existing_item['depth'] + 1;
   while ($i <= MENU_MAX_DEPTH && $j <= MENU_MAX_DEPTH) {
-    $set[] = 'p'. $i++ .' = p'. $j++;
+    $set[] = '[p'. $i++ .'] = [p'. $j++ .']';
   }
   while ($i <= MENU_MAX_DEPTH) {
-    $set[] = 'p'. $i++ .' = 0';
+    $set[] = '[p'. $i++ .'] = 0';
   }
 
   $shift = $item['depth'] - $existing_item['depth'];
   if ($shift < 0) {
     $args[] = -$shift;
-    $set[] = 'depth = depth - %d';
+    $set[] = '[depth] = [depth] - %d';
   }
   elseif ($shift > 0) {
     // The order of $set must be reversed so the new values don't overwrite the
@@ -2095,17 +2078,17 @@ function _menu_link_move_children($item,
     $args = array_reverse($args);
 
     $args[] = $shift;
-    $set[] = 'depth = depth + %d';
+    $set[] = '[depth] = [depth] + %d';
   }
-  $where[] = "menu_name = '%s'";
+  $where[] = "[menu_name] = %s";
   $args[] = $existing_item['menu_name'];
   $p = 'p1';
   for ($i = 1; $i <= MENU_MAX_DEPTH && $existing_item[$p]; $p = 'p'. ++$i) {
-    $where[] = "$p = %d";
+    $where[] = "[$p] = %d";
     $args[] = $existing_item[$p];
   }
 
-  db_query("UPDATE {menu_links} SET ". implode(', ', $set) ." WHERE ". implode(' AND ', $where), $args);
+  db_query("UPDATE [{menu_links}] SET ". implode(', ', $set) ." WHERE ". implode(' AND ', $where), $args);
   // Check the has_children status of the parent, while excluding this item.
   _menu_update_parental_status($existing_item, TRUE);
 }
@@ -2117,10 +2100,10 @@ function _menu_update_parental_status($i
   // If plid == 0, there is nothing to update.
   if ($item['plid']) {
     // We may want to exclude the passed link as a possible child.
-    $where = $exclude ? " AND mlid != %d" : '';
+    $where = $exclude ? " AND [mlid] != %d" : '';
     // Check if at least one visible child exists in the table.
-    $parent_has_children = (bool)db_result(db_query_range("SELECT mlid FROM {menu_links} WHERE menu_name = '%s' AND plid = %d AND hidden = 0". $where, $item['menu_name'], $item['plid'], $item['mlid'], 0, 1));
-    db_query("UPDATE {menu_links} SET has_children = %d WHERE mlid = %d", $parent_has_children, $item['plid']);
+    $parent_has_children = (bool)db_result(db_query_range("SELECT [mlid] FROM [{menu_links}] WHERE [menu_name] = %s AND [plid] = %d AND [hidden] = 0". $where, $item['menu_name'], $item['plid'], $item['mlid'], 0, 1));
+    db_query("UPDATE [{menu_links}] SET [has_children] = %d WHERE [mlid] = %d", $parent_has_children, $item['plid']);
   }
 }
 
@@ -2304,23 +2287,19 @@ function _menu_router_build($callbacks) 
       $item['include file'] = $file_path .'/'. $item['file'];
     }
 
-    $title_arguments = $item['title arguments'] ? serialize($item['title arguments']) : '';
-    db_query("INSERT INTO {menu_router}
-      (path, load_functions, to_arg_functions, access_callback,
-      access_arguments, page_callback, page_arguments, fit,
-      number_parts, tab_parent, tab_root,
-      title, title_callback, title_arguments,
-      type, block_callback, description, position, weight, file)
-      VALUES ('%s', '%s', '%s', '%s',
-      '%s', '%s', '%s', %d,
-      %d, '%s', '%s',
-      '%s', '%s', '%s',
-      %d, '%s', '%s', '%s', %d, '%s')",
-      $path, $item['load_functions'], $item['to_arg_functions'], $item['access callback'],
-      serialize($item['access arguments']), $item['page callback'], serialize($item['page arguments']), $item['_fit'],
-      $item['_number_parts'], $item['tab_parent'], $item['tab_root'],
-      $item['title'], $item['title callback'], $title_arguments,
-      $item['type'], $item['block callback'], $item['description'], $item['position'], $item['weight'], $item['include file']);
+    $values = $item;
+    $values['path'] = $path;
+    $values['access_callback'] = $item['access callback'];
+    $values['access_arguments'] = serialize($item['access arguments']);
+    $values['page_callback'] = $item['page callback'];
+    $values['page_arguments'] = serialize($item['page arguments']);
+    $values['fit'] = $item['_fit'];
+    $values['number_parts'] = $item['_number_parts'];
+    $values['title_callback'] = $item['title callback'];
+    $values['title_arguments'] = $item['title arguments'] ? serialize($item['title arguments']) : '';
+    $values['block_callback'] = $item['block callback'];
+    $values['file'] = $item['include file'];
+    drupal_write_record('menu_router', $values);
   }
   // Sort the masks so they are in order of descending fit, and store them.
   $masks = array_keys($masks);
@@ -2391,7 +2370,7 @@ function menu_valid_path($form_item) {
   }
   elseif (preg_match('/\/\%/', $path)) {
     // Path is dynamic (ie 'user/%'), so check directly against menu_router table.
-    if ($item = db_fetch_array(db_query("SELECT * FROM {menu_router} where path = '%s' ", $path))) {
+    if ($item = db_fetch_array(db_query("SELECT * FROM [{menu_router}] WHERE [path] = %s ", $path))) {
       $item['link_path']  = $form_item['link_path'];
       $item['link_title'] = $form_item['link_title'];
       $item['external']   = FALSE;
Index: includes/module.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/module.inc,v
retrieving revision 1.115
diff -u -p -r1.115 module.inc
--- includes/module.inc	27 Dec 2007 12:31:05 -0000	1.115
+++ includes/module.inc	3 Apr 2008 07:55:02 -0000
@@ -58,10 +58,10 @@ function module_list($refresh = FALSE, $
     }
     else {
       if ($bootstrap) {
-        $result = db_query("SELECT name, filename, throttle FROM {system} WHERE type = 'module' AND status = 1 AND bootstrap = 1 ORDER BY weight ASC, filename ASC");
+        $result = db_query("SELECT [name], [filename], [throttle] FROM [{system}] WHERE [type] = 'module' AND [status] = 1 AND [bootstrap] = 1 ORDER BY [weight] ASC, [filename] ASC");
       }
       else {
-        $result = db_query("SELECT name, filename, throttle FROM {system} WHERE type = 'module' AND status = 1 ORDER BY weight ASC, filename ASC");
+        $result = db_query("SELECT [name], [filename], [throttle] FROM [{system}] WHERE [type] = 'module' AND [status] = 1 ORDER BY [weight] ASC, [filename] ASC");
       }
       while ($module = db_fetch_object($result)) {
         if (file_exists($module->filename)) {
@@ -138,13 +138,13 @@ function module_rebuild_cache() {
 
     // Update the contents of the system table:
     if (isset($file->status) || (isset($file->old_filename) && $file->old_filename != $file->filename)) {
-      db_query("UPDATE {system} SET info = '%s', name = '%s', filename = '%s', bootstrap = %d WHERE filename = '%s'", serialize($files[$filename]->info), $file->name, $file->filename, $bootstrap, $file->old_filename);
+      db_query("UPDATE [{system}] SET [info] = %s, [name] = %s, [filename] = %s, [bootstrap] = %d WHERE [filename] = %s", serialize($files[$filename]->info), $file->name, $file->filename, $bootstrap, $file->old_filename);
     }
     else {
       // This is a new module.
       $files[$filename]->status = 0;
       $files[$filename]->throttle = 0;
-      db_query("INSERT INTO {system} (name, info, type, filename, status, throttle, bootstrap) VALUES ('%s', '%s', '%s', '%s', %d, %d, %d)", $file->name, serialize($files[$filename]->info), 'module', $file->filename, 0, 0, $bootstrap);
+      db_query("INSERT INTO [{system}] ([name], [info], [type], [filename], [status], [throttle], [bootstrap]) VALUES (%s, %s, %s, %s, %d, %d, %d)", $file->name, serialize($files[$filename]->info), 'module', $file->filename, 0, 0, $bootstrap);
     }
   }
   $files = _module_build_dependencies($files);
@@ -286,10 +286,10 @@ function module_load_all_includes($type,
 function module_enable($module_list) {
   $invoke_modules = array();
   foreach ($module_list as $module) {
-    $existing = db_fetch_object(db_query("SELECT status FROM {system} WHERE type = '%s' AND name = '%s'", 'module', $module));
+    $existing = db_fetch_object(db_query("SELECT [status] FROM [{system}] WHERE [type] = %s AND [name] = %s", 'module', $module));
     if ($existing->status == 0) {
       module_load_install($module);
-      db_query("UPDATE {system} SET status = %d, throttle = %d WHERE type = '%s' AND name = '%s'", 1, 0, 'module', $module);
+      db_query("UPDATE [{system}] SET [status] = %d, [throttle] = %d WHERE [type] = %s AND [name] = %s", 1, 0, 'module', $module);
       drupal_load('module', $module);
       $invoke_modules[] = $module;
     }
@@ -331,7 +331,7 @@ function module_disable($module_list) {
 
       module_load_install($module);
       module_invoke($module, 'disable');
-      db_query("UPDATE {system} SET status = %d, throttle = %d WHERE type = '%s' AND name = '%s'", 0, 0, 'module', $module);
+      db_query("UPDATE [{system}] SET [status] = %d, [throttle] = %d WHERE [type] = %s AND [name] = %s", 0, 0, 'module', $module);
       $invoke_modules[] = $module;
     }
   }
Index: includes/path.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/path.inc,v
retrieving revision 1.19
diff -u -p -r1.19 path.inc
--- includes/path.inc	4 Nov 2007 16:42:45 -0000	1.19
+++ includes/path.inc	3 Apr 2008 07:55:02 -0000
@@ -52,7 +52,7 @@ function drupal_lookup_path($action, $pa
 
   // Use $count to avoid looking up paths in subsequent calls if there simply are no aliases
   if (!isset($count)) {
-    $count = db_result(db_query('SELECT COUNT(pid) FROM {url_alias}'));
+    $count = db_result(db_query('SELECT COUNT([pid]) FROM [{url_alias}]'));
   }
 
   if ($action == 'wipe') {
@@ -65,7 +65,7 @@ function drupal_lookup_path($action, $pa
         return $map[$path_language][$path];
       }
       // Get the most fitting result falling back with alias without language
-      $alias = db_result(db_query("SELECT dst FROM {url_alias} WHERE src = '%s' AND language IN('%s', '') ORDER BY language DESC", $path, $path_language));
+      $alias = db_result(db_query("SELECT [dst] FROM [{url_alias}] WHERE [src] = %s AND [language] IN (%s, %s) ORDER BY [language] DESC", $path, $path_language, ''));
       $map[$path_language][$path] = $alias;
       return $alias;
     }
@@ -76,7 +76,7 @@ function drupal_lookup_path($action, $pa
       $src = '';
       if (!isset($map[$path_language]) || !($src = array_search($path, $map[$path_language]))) {
         // Get the most fitting result falling back with alias without language
-        if ($src = db_result(db_query("SELECT src FROM {url_alias} WHERE dst = '%s' AND language IN('%s', '') ORDER BY language DESC", $path, $path_language))) {
+        if ($src = db_result(db_query("SELECT [src] FROM [{url_alias}] WHERE [dst] = %s AND [language] IN (%s, %s) ORDER BY [language] DESC", $path, $path_language, ''))) {
           $map[$path_language][$src] = $path;
         }
         else {
Index: includes/schema.db2.inc
===================================================================
RCS file: includes/schema.db2.inc
diff -N includes/schema.db2.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/schema.db2.inc	3 Apr 2008 07:55:02 -0000
@@ -0,0 +1,413 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Schema API shared between ibm_db2 and pdo_ibm database engines.
+ */
+
+/**
+ * @ingroup schemaapi
+ * @{
+ */
+
+/**
+ * This maps a generic data type in combination with its data size
+ * to the engine-specific data type.
+ */
+function db_type_map() {
+  // Put :normal last so it gets preserved by array_flip.  This makes
+  // it much easier for modules (such as schema.module) to map
+  // database types back into schema types.
+  $map = array(
+    'varchar:normal'  => 'VARCHAR',
+    'char:normal'     => 'CHAR',
+
+    'text:tiny'       => 'VARCHAR(4000)',
+    'text:small'      => 'VARCHAR(4000)',
+    'text:medium'     => 'VARCHAR(4000)',
+    'text:big'        => 'VARCHAR(4000)',
+    'text:normal'     => 'VARCHAR(4000)',
+
+    'serial:tiny'     => 'INTEGER',
+    'serial:small'    => 'INTEGER',
+    'serial:medium'   => 'INTEGER',
+    'serial:big'      => 'BIGINT',
+    'serial:normal'   => 'INTEGER',
+
+    'int:tiny'        => 'SMALLINT',
+    'int:small'       => 'SMALLINT',
+    'int:medium'      => 'INTEGER',
+    'int:big'         => 'BIGINT',
+    'int:normal'      => 'INTEGER',
+
+    'float:tiny'      => 'REAL',
+    'float:small'     => 'REAL',
+    'float:medium'    => 'REAL',
+    'float:big'       => 'DOUBLE',
+    'float:normal'    => 'REAL',
+
+    'numeric:normal'  => 'NUMERIC',
+
+    'blob:big'        => 'BLOB(2G)',
+    'blob:normal'     => 'BLOB(2G)',
+
+    'datetime:normal' => 'TIMESTAMP',
+  );
+  return $map;
+}
+
+/**
+ * Generate SQL to create a new table from a Drupal schema definition.
+ *
+ * @param $name
+ *   The name of the table to create.
+ * @param $table
+ *   A Schema API table definition array.
+ * @return
+ *   An array of SQL statements to create the table.
+ */
+function db_create_table_sql($name, $table) {
+  $sql_keys = array();
+  if (isset($table['primary key']) && is_array($table['primary key'])) {
+    $sql_keys[] = 'CONSTRAINT [pk_{'. $name .'}] PRIMARY KEY (['. implode('], [', $table['primary key']) .'])';
+  }
+  if (isset($table['unique keys']) && is_array($table['unique keys'])) {
+    foreach ($table['unique keys'] as $key => $value) {
+      $sql_keys[] = 'CONSTRAINT [ix_{'. $name .'}_'. $key .'] UNIQUE (['. implode('], [', $value) .'])';
+    }
+  }
+
+  $sql_fields = array();
+  foreach ($table['fields'] as $field_name => $field) {
+    $sql_fields[] = _db_create_field_sql($field_name, _db_process_field($field));
+  }
+
+  $sql = 'CREATE TABLE [{'. $name .'}] ('."\n\t";
+  $sql .= implode(",\n\t", $sql_fields);
+  if (count($sql_keys) > 0) {
+    $sql .= ",\n\t";
+  }
+  $sql .= implode(",\n\t", $sql_keys);
+  $sql .= "\n)";
+  $statements[] = $sql;
+
+  if (isset($table['indexes']) && is_array($table['indexes'])) {
+    foreach ($table['indexes'] as $key => $value) {
+      $statements[] = _db_create_index_sql($name, $key, $value);
+    }
+  }
+
+  return $statements;
+}
+
+function _db_create_index_sql($table, $name, $fields) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  return 'CREATE INDEX ['. $ix .'] ON [{'. $table .'}] ('. _db_create_key_sql($fields) .')';
+}
+
+function _db_create_key_sql($fields) {
+  $ret = array();
+  foreach ($fields as $field) {
+    $ret[] = is_array($field) ? '['. $field[0] .']' : '['. $field .']';
+  }
+  return implode(', ', $ret);
+}
+
+/**
+ * Set database-engine specific properties for a field.
+ *
+ * @param $field
+ *   A field description array, as specified in the schema documentation.
+ */
+function _db_process_field($field) {
+  if (!isset($field['size'])) {
+    $field['size'] = 'normal';
+  }
+  // Set the correct database-engine specific datatype.
+  if (!isset($field['db2_type'])) {
+    $map = db_type_map();
+    $field['db2_type'] = $map[$field['type'] .':'. $field['size']];
+  }
+  if ($field['type'] == 'serial') {
+    unset($field['not null']);
+  }
+  return $field;
+}
+
+/**
+ * Create an SQL string for a field to be used in table creation or alteration.
+ *
+ * Before passing a field out of a schema definition into this function it has
+ * to be processed by _db_process_field().
+ *
+ * @param $name
+ *    Name of the field.
+ * @param $spec
+ *    The field specification, as per the schema data structure format.
+ */
+function _db_create_field_sql($name, $spec) {
+  $sql = '['. $name .'] '. $spec['db2_type'];
+
+  if ($spec['type'] == 'blob') {
+    $sql .= " NOT LOGGED NOT COMPACT";
+    unset($spec['not null']);
+  }
+
+  if (!empty($spec['length'])) {
+    $sql .= '('. $spec['length'] .')';
+  }
+  elseif (isset($spec['precision']) && isset($spec['scale'])) {
+    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
+  }
+
+  if (isset($spec['not null']) && $spec['not null']) {
+    $sql .= ' NOT NULL';
+  }
+
+  if (isset($spec['default'])) {
+    if (($spec['type'] == 'blob') && ($spec['default'] == '')) {
+      $sql .= " DEFAULT EMPTY_BLOB()";
+    }
+    else {
+      $default = is_string($spec['default']) ? "'". $spec['default'] ."'" : $spec['default'];
+      $sql .= " DEFAULT $default";
+    }
+  }
+
+  if (!empty($spec['unsigned'])) {
+    $sql .= ' CHECK (['. $name .'] >= 0)';
+  }
+
+  if ($spec['type'] == 'serial') {
+    $sql .= ' GENERATED BY DEFAULT AS IDENTITY (START WITH +1 INCREMENT BY +1 NO CYCLE NO CACHE ORDER)';
+  }
+
+  return $sql;
+}
+
+/**
+ * Rename a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be renamed.
+ * @param $new_name
+ *   The new name for the table.
+ */
+function db_rename_table(&$ret, $table, $new_name) {
+  $ret[] = update_sql('RENAME TABLE [{'. $table .'}] TO [{'. $new_name .'}]');
+}
+
+/**
+ * Drop a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be dropped.
+ */
+function db_drop_table(&$ret, $table) {
+  $ret[] = update_sql('DROP TABLE [{'. $table .'}]');
+}
+
+/**
+ * Add a new field to a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table to be altered.
+ * @param $field
+ *   Name of the field to be added.
+ * @param $spec
+ *   The field specification array, as taken from a schema definition
+ */
+function db_add_field(&$ret, $table, $field, $spec) {
+  $query = 'ALTER TABLE [{'. $table .'}] ADD ';
+  $query .= _db_create_field_sql($field, _db_process_field($spec));
+  $ret[] = update_sql($query);
+}
+
+/**
+ * Drop a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be dropped.
+ */
+function db_drop_field(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP ['. $field .']');
+}
+
+/**
+ * Set the default value for a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ * @param $default
+ *   Default value to be set. NULL for 'default NULL'.
+ */
+function db_field_set_default(&$ret, $table, $field, $default) {
+  if ($default == NULL) {
+    $default = 'NULL';
+  }
+  else {
+    $default = is_string($default) ? "'$default'" : $default;
+  }
+
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER ['. $field .'] SET DEFAULT '. $default);
+}
+
+/**
+ * Set a field to have no default value.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ */
+function db_field_set_no_default(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER ['. $field .'] DROP DEFAULT');
+}
+
+/**
+ * Add a primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $fields
+ *   Fields for the primary key.
+ */
+function db_add_primary_key(&$ret, $table, $fields) {
+  $pk = 'pk_{'. $table .'}';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $pk .'] PRIMARY KEY (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop the primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ */
+function db_drop_primary_key(&$ret, $table) {
+  $pk = 'pk_{'. $table .'}';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $pk .']');
+}
+
+/**
+ * Add a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_unique_key(&$ret, $table, $name, $fields) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $ix .'] UNIQUE (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ */
+function db_drop_unique_key(&$ret, $table, $name) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $ix .']');
+}
+
+/**
+ * Add an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_index(&$ret, $table, $name, $fields) {
+  $ret[] = update_sql(_db_create_index_sql($table, $name, $fields));
+}
+
+/**
+ * Drop an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ */
+function db_drop_index(&$ret, $table, $name) {
+  $name = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('DROP INDEX ['. $name .']');
+}
+
+/**
+ * Change a field definition.
+ *
+ * Remember that changing a field definition involves adding a new field
+ * and dropping an old one. This means that any indices, primary keys and
+ * sequences from serial-type fields are dropped and might need to be
+ * recreated.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table.
+ * @param $field
+ *   Name of the field to change.
+ * @param $field_new
+ *   New name for the field (set to the same as $field if you don't want to change the name).
+ * @param $spec
+ *   The field specification for the new field.
+ */
+function db_change_field(&$ret, $table, $field, $field_new, $spec) {
+  // NOTE: DB2 don't support column rename query (known issue), so first of
+  // all we need to copy old column data to temp column, drop old column, and
+  // copy it back to new column.
+  db_add_field($ret, $table, "new_" . $field_new, $spec);
+  $ret[] = update_sql('UPDATE [{'. $table .'}] SET [new_'. $field_new ."] = [". $field .']');
+  db_drop_field($ret, $table, $field);
+  db_add_field($ret, $table, "$field_new", $spec);
+  $ret[] = update_sql('UPDATE [{'. $table .'}] SET ['. $field_new ."] = [new_". $field .']');
+  $not_null = isset($spec['not null']) ? $spec['not null'] : FALSE;
+  unset($spec['not null']);
+  if ($not_null) {
+    $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER ['. $field_new ."] SET NOT NULL");
+  }
+  db_drop_field($ret, $table, "new_" . $field);
+}
+
+/**
+ * @} End of "ingroup schemaapi".
+ */
Index: includes/schema.mysql.inc
===================================================================
RCS file: includes/schema.mysql.inc
diff -N includes/schema.mysql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/schema.mysql.inc	3 Apr 2008 07:55:02 -0000
@@ -0,0 +1,491 @@
+<?php
+// $Id: schema.mysql.inc,v 1.3 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Schema API shared between mysql, mysqli and pdo_mysql database engines.
+ */
+
+/**
+ * @ingroup schemaapi
+ * @{
+ */
+
+/**
+ * This maps a generic data type in combination with its data size
+ * to the engine-specific data type.
+ */
+function db_type_map() {
+  // Put :normal last so it gets preserved by array_flip.  This makes
+  // it much easier for modules (such as schema.module) to map
+  // database types back into schema types.
+  $map = array(
+    'varchar:normal'  => 'VARCHAR',
+    'char:normal'     => 'CHAR',
+
+    'text:tiny'       => 'TINYTEXT',
+    'text:small'      => 'TINYTEXT',
+    'text:medium'     => 'MEDIUMTEXT',
+    'text:big'        => 'LONGTEXT',
+    'text:normal'     => 'TEXT',
+
+    'serial:tiny'     => 'TINYINT',
+    'serial:small'    => 'SMALLINT',
+    'serial:medium'   => 'MEDIUMINT',
+    'serial:big'      => 'BIGINT',
+    'serial:normal'   => 'INT',
+
+    'int:tiny'        => 'TINYINT',
+    'int:small'       => 'SMALLINT',
+    'int:medium'      => 'MEDIUMINT',
+    'int:big'         => 'BIGINT',
+    'int:normal'      => 'INT',
+
+    'float:tiny'      => 'FLOAT',
+    'float:small'     => 'FLOAT',
+    'float:medium'    => 'FLOAT',
+    'float:big'       => 'DOUBLE',
+    'float:normal'    => 'FLOAT',
+
+    'numeric:normal'  => 'DECIMAL',
+
+    'blob:big'        => 'LONGBLOB',
+    'blob:normal'     => 'BLOB',
+
+    'datetime:normal' => 'DATETIME',
+  );
+  return $map;
+}
+
+/**
+ * Generate SQL to create a new table from a Drupal schema definition.
+ *
+ * @param $name
+ *   The name of the table to create.
+ * @param $table
+ *   A Schema API table definition array.
+ * @return
+ *   An array of SQL statements to create the table.
+ */
+function db_create_table_sql($name, $table) {
+
+  if (empty($table['mysql_suffix'])) {
+    $table['mysql_suffix'] = "/*!40100 DEFAULT CHARACTER SET UTF8 */";
+  }
+
+  $sql = "CREATE TABLE [{". $name ."}] (\n";
+
+  // Add the SQL statement for each field.
+  foreach ($table['fields'] as $field_name => $field) {
+    $sql .= _db_create_field_sql($field_name, _db_process_field($field)) .", \n";
+  }
+
+  // Process keys & indexes.
+  $keys = _db_create_keys($table);
+  if (count($keys)) {
+    $sql .= implode(", \n", $keys) .", \n";
+  }
+
+  // Remove the last comma and space.
+  $sql = substr($sql, 0, -3) ."\n) ";
+
+  $sql .= $table['mysql_suffix'];
+
+  return array($sql);
+}
+
+function _db_create_key_sql($fields) {
+  $ret = array();
+  foreach ($fields as $field) {
+    if (is_array($field)) {
+      $ret[] = $field[0] .'('. $field[1] .')';
+    }
+    else {
+      $ret[] = '['. $field .']';
+    }
+  }
+  return implode(', ', $ret);
+}
+
+function _db_create_keys($spec) {
+  $keys = array();
+
+  if (!empty($spec['primary key'])) {
+    $keys[] = 'PRIMARY KEY ('. _db_create_key_sql($spec['primary key']) .')';
+  }
+  if (!empty($spec['unique keys'])) {
+    foreach ($spec['unique keys'] as $key => $fields) {
+      $keys[] = 'UNIQUE KEY ['. $key .'] ('. _db_create_key_sql($fields) .')';
+    }
+  }
+  if (!empty($spec['indexes'])) {
+    foreach ($spec['indexes'] as $index => $fields) {
+      $keys[] = 'INDEX ['. $index .'] ('. _db_create_key_sql($fields) .')';
+    }
+  }
+
+  return $keys;
+}
+
+/**
+ * Set database-engine specific properties for a field.
+ *
+ * @param $field
+ *   A field description array, as specified in the schema documentation.
+ */
+function _db_process_field($field) {
+
+  if (!isset($field['size'])) {
+    $field['size'] = 'normal';
+  }
+
+  // Set the correct database-engine specific datatype.
+  if (!isset($field['mysql_type'])) {
+    $map = db_type_map();
+    $field['mysql_type'] = $map[$field['type'] .':'. $field['size']];
+  }
+
+  if ($field['type'] == 'serial') {
+    $field['auto_increment'] = TRUE;
+  }
+
+  return $field;
+}
+
+/**
+ * Create an SQL string for a field to be used in table creation or alteration.
+ *
+ * Before passing a field out of a schema definition into this function it has
+ * to be processed by _db_process_field().
+ *
+ * @param $name
+ *    Name of the field.
+ * @param $spec
+ *    The field specification, as per the schema data structure format.
+ */
+function _db_create_field_sql($name, $spec) {
+  $sql = "[". $name ."] ". $spec['mysql_type'];
+
+  if (($spec['type'] == 'text') || ($spec['type'] == 'blob')) {
+    unset($spec['default']);
+  }
+
+  if (isset($spec['length'])) {
+    $sql .= '('. $spec['length'] .')';
+  }
+  elseif (isset($spec['precision']) && isset($spec['scale'])) {
+    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
+  }
+
+  if (!empty($spec['unsigned'])) {
+    $sql .= ' UNSIGNED';
+  }
+
+  if (!empty($spec['not null'])) {
+    $sql .= ' NOT NULL';
+  }
+
+  if (!empty($spec['auto_increment'])) {
+    $sql .= ' AUTO_INCREMENT';
+  }
+
+  if (isset($spec['default'])) {
+    if (is_string($spec['default'])) {
+      $spec['default'] = "'". $spec['default'] ."'";
+    }
+    $sql .= ' DEFAULT '. $spec['default'];
+  }
+
+  if (empty($spec['not null']) && !isset($spec['default'])) {
+    $sql .= ' DEFAULT NULL';
+  }
+
+  return $sql;
+}
+
+/**
+ * Rename a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be renamed.
+ * @param $new_name
+ *   The new name for the table.
+ */
+function db_rename_table(&$ret, $table, $new_name) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] RENAME TO [{'. $new_name .'}]');
+}
+
+/**
+ * Drop a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be dropped.
+ */
+function db_drop_table(&$ret, $table) {
+  $ret[] = update_sql('DROP TABLE [{'. $table .'}]');
+}
+
+/**
+ * Add a new field to a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table to be altered.
+ * @param $field
+ *   Name of the field to be added.
+ * @param $spec
+ *   The field specification array, as taken from a schema definition.
+ *   The specification may also contain the key 'initial', the newly
+ *   created field will be set to the value of the key in all rows.
+ *   This is most useful for creating NOT NULL columns with no default
+ *   value in existing tables.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with adding the field. The format is the same as a
+ *   table specification but without the 'fields' element.  If you are
+ *   adding a type 'serial' field, you MUST specify at least one key
+ *   or index including it in this array. @see db_change_field for more
+ *   explanation why.
+ */
+function db_add_field(&$ret, $table, $field, $spec, $keys_new = array()) {
+  $fixnull = FALSE;
+  if (!empty($spec['not null']) && !isset($spec['default'])) {
+    $fixnull = TRUE;
+    $spec['not null'] = FALSE;
+  }
+  $query = 'ALTER TABLE [{'. $table .'}] ADD ';
+  $query .= _db_create_field_sql($field, _db_process_field($spec));
+  if (count($keys_new)) {
+    $query .= ', ADD '. implode(', ADD ', _db_create_keys($keys_new));
+  }
+  $ret[] = update_sql($query);
+  if (isset($spec['initial'])) {
+    // All this because update_sql does not support %-placeholders.
+    $sql = 'UPDATE [{'. $table .'}] SET ['. $field .'] = '. db_type_placeholder($spec['type']);
+    $result = db_query($sql, $spec['initial']);
+    $ret[] = array('success' => $result !== FALSE, 'query' => check_plain($sql .' ('. $spec['initial'] .')'));
+  }
+  if ($fixnull) {
+    $spec['not null'] = TRUE;
+    db_change_field($ret, $table, $field, $field, $spec);
+  }
+}
+
+/**
+ * Drop a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be dropped.
+ */
+function db_drop_field(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP '. $field);
+}
+
+/**
+ * Set the default value for a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ * @param $default
+ *   Default value to be set. NULL for 'default NULL'.
+ */
+function db_field_set_default(&$ret, $table, $field, $default) {
+  if ($default == NULL) {
+    $default = 'NULL';
+  }
+  else {
+    $default = is_string($default) ? "'$default'" : $default;
+  }
+
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] SET DEFAULT '. $default);
+}
+
+/**
+ * Set a field to have no default value.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ */
+function db_field_set_no_default(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] DROP DEFAULT');
+}
+
+/**
+ * Add a primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $fields
+ *   Fields for the primary key.
+ */
+function db_add_primary_key(&$ret, $table, $fields) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD PRIMARY KEY ('. _db_create_key_sql($fields) .')');
+}
+
+/**
+ * Drop the primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ */
+function db_drop_primary_key(&$ret, $table) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP PRIMARY KEY');
+}
+
+/**
+ * Add a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_unique_key(&$ret, $table, $name, $fields) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD UNIQUE KEY '. $name .' ('. _db_create_key_sql($fields) .')');
+}
+
+/**
+ * Drop a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ */
+function db_drop_unique_key(&$ret, $table, $name) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP KEY '. $name);
+}
+
+/**
+ * Add an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_index(&$ret, $table, $name, $fields) {
+  $query = 'ALTER TABLE [{'. $table .'}] ADD INDEX ['. $name .'] ('. _db_create_key_sql($fields) .')';
+  $ret[] = update_sql($query);
+}
+
+/**
+ * Drop an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ */
+function db_drop_index(&$ret, $table, $name) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP INDEX '. $name);
+}
+
+/**
+ * Change a field definition.
+ *
+ * IMPORTANT NOTE: To maintain database portability, you have to explicitly
+ * recreate all indices and primary keys that are using the changed field.
+ *
+ * That means that you have to drop all affected keys and indexes with
+ * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
+ * To recreate the keys and indices, pass the key definitions as the
+ * optional $keys_new argument directly to db_change_field().
+ *
+ * For example, suppose you have:
+ * @code
+ * $schema['foo'] = array(
+ *   'fields' => array(
+ *     'bar' => array('type' => 'int', 'not null' => TRUE)
+ *   ),
+ *   'primary key' => array('bar')
+ * );
+ * @endcode
+ * and you want to change foo.bar to be type serial, leaving it as the
+ * primary key.  The correct sequence is:
+ * @code
+ * db_drop_primary_key($ret, 'foo');
+ * db_change_field($ret, 'foo', 'bar', 'bar',
+ *   array('type' => 'serial', 'not null' => TRUE),
+ *   array('primary key' => array('bar')));
+ * @endcode
+ *
+ * The reasons for this are due to the different database engines:
+ *
+ * On PostgreSQL, changing a field definition involves adding a new field
+ * and dropping an old one which* causes any indices, primary keys and
+ * sequences (from serial-type fields) that use the changed field to be dropped.
+ *
+ * On MySQL, all type 'serial' fields must be part of at least one key
+ * or index as soon as they are created.  You cannot use
+ * db_add_{primary_key,unique_key,index}() for this purpose because
+ * the ALTER TABLE command will fail to add the column without a key
+ * or index specification.  The solution is to use the optional
+ * $keys_new argument to create the key or index at the same time as
+ * field.
+ *
+ * You could use db_add_{primary_key,unique_key,index}() in all cases
+ * unless you are converting a field to be type serial. You can use
+ * the $keys_new argument in all cases.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table.
+ * @param $field
+ *   Name of the field to change.
+ * @param $field_new
+ *   New name for the field (set to the same as $field if you don't want to change the name).
+ * @param $spec
+ *   The field specification for the new field.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with changing the field. The format is the same as a
+ *   table specification but without the 'fields' element.
+ */
+
+function db_change_field(&$ret, $table, $field, $field_new, $spec, $keys_new = array()) {
+  $sql = 'ALTER TABLE [{'. $table .'}] CHANGE '. $field .' '.
+    _db_create_field_sql($field_new, _db_process_field($spec));
+  if (count($keys_new)) {
+    $sql .= ', ADD '. implode(', ADD ', _db_create_keys($keys_new));
+  }
+  $ret[] = update_sql($sql);
+}
+
+/**
+ * @} End of "ingroup schemaapi".
+ */
Index: includes/schema.oracle.inc
===================================================================
RCS file: includes/schema.oracle.inc
diff -N includes/schema.oracle.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/schema.oracle.inc	3 Apr 2008 07:55:02 -0000
@@ -0,0 +1,545 @@
+<?php
+// $Id: schema.oracle.inc,v 1.3 2007/12/11 07:21:32 hswong3i Exp $
+
+/**
+ * @file
+ * Schema API shared between oci8 and pdo_oci database engines.
+ */
+
+/**
+ * @ingroup schemaapi
+ * @{
+ */
+
+/**
+ * This maps a generic data type in combination with its data size
+ * to the engine-specific data type.
+ */
+function db_type_map() {
+  // Put :normal last so it gets preserved by array_flip.  This makes
+  // it much easier for modules (such as schema.module) to map
+  // database types back into schema types.
+  $map = array(
+    'varchar:normal'  => 'VARCHAR2',
+    'char:normal'     => 'CHAR',
+
+    'text:tiny'       => 'VARCHAR2(4000)',
+    'text:small'      => 'VARCHAR2(4000)',
+    'text:medium'     => 'VARCHAR2(4000)',
+    'text:big'        => 'VARCHAR2(4000)',
+    'text:normal'     => 'VARCHAR2(4000)',
+
+    'serial:tiny'     => 'NUMBER(38)',
+    'serial:small'    => 'NUMBER(38)',
+    'serial:medium'   => 'NUMBER(38)',
+    'serial:big'      => 'NUMBER(38)',
+    'serial:normal'   => 'NUMBER(38)',
+
+    'int:tiny'        => 'NUMBER(38)',
+    'int:small'       => 'NUMBER(38)',
+    'int:medium'      => 'NUMBER(38)',
+    'int:big'         => 'NUMBER(38)',
+    'int:normal'      => 'NUMBER(38)',
+
+    'float:tiny'      => 'FLOAT(126)',
+    'float:small'     => 'FLOAT(126)',
+    'float:medium'    => 'FLOAT(126)',
+    'float:big'       => 'FLOAT(126)',
+    'float:normal'    => 'FLOAT(126)',
+
+    'numeric:normal'  => 'NUMBER',
+
+    'blob:big'        => 'BLOB',
+    'blob:normal'     => 'BLOB',
+
+    'datetime:normal' => 'TIMESTAMP',
+  );
+  return $map;
+}
+
+/**
+ * Generate SQL to create a new table from a Drupal schema definition.
+ *
+ * @param $name
+ *   The name of the table to create.
+ * @param $table
+ *   A Schema API table definition array.
+ * @return
+ *   An array of SQL statements to create the table.
+ */
+function db_create_table_sql($name, $table) {
+  $sql_fields = array();
+  foreach ($table['fields'] as $field_name => $field) {
+    $spec = _db_process_field($field);
+    $sql_fields[] = _db_create_field_sql($field_name, $spec);
+    if ($spec['type'] == 'serial') {
+      $table['serials'][] = $field_name;
+    }
+  }
+
+  $sql_keys = array();
+  if (isset($table['primary key']) && is_array($table['primary key'])) {
+    $sql_keys[] = 'CONSTRAINT [pk_{'. $name .'}] PRIMARY KEY (['. implode('], [', $table['primary key']) .'])';
+  }
+  if (isset($table['unique keys']) && is_array($table['unique keys'])) {
+    foreach ($table['unique keys'] as $key => $value) {
+      $sql_keys[] = 'CONSTRAINT [ix_{'. $name .'}_'. $key .'] UNIQUE (['. implode('], [', $value) .'])';
+    }
+  }
+
+  $sql = "CREATE TABLE [{". $name ."}] (\n\t";
+  $sql .= implode(",\n\t", $sql_fields);
+  if (count($sql_keys) > 0) {
+    $sql .= ",\n\t";
+  }
+  $sql .= implode(",\n\t", $sql_keys);
+  $sql .= "\n)";
+  $statements[] = $sql;
+
+  if (isset($table['indexes']) && is_array($table['indexes'])) {
+    foreach ($table['indexes'] as $key => $value) {
+      $statements[] = _db_create_index_sql($name, $key, $value);
+    }
+  }
+
+  if (isset($table['serials']) && is_array($table['serials'])) {
+    foreach ($table['serials'] as $key => $value) {
+      $statements[] = _db_create_sequence_sql($name, $value);
+      $statements[] = _db_create_trigger_sql($name, $value);
+    }
+  }
+
+  return $statements;
+}
+
+function _db_create_sequence_sql($table, $field) {
+  $seq = 'seq_{'. $table .'}_'. $field;
+  return "CREATE SEQUENCE [". $seq ."] MINVALUE 1 INCREMENT BY 1 START WITH 1 NOCACHE NOORDER NOCYCLE";
+}
+
+function _db_create_trigger_sql($table, $field) {
+  $tgr = 'tgr_{'. $table .'}_'. $field;
+  $seq = 'seq_{'. $table .'}_'. $field;
+  $query = "CREATE OR REPLACE TRIGGER [". $tgr ."]\n";
+  $query .= "BEFORE INSERT ON [{". $table ."}]\n";
+  $query .= "FOR EACH ROW\n";
+  $query .= "BEGIN\n";
+  $query .= "\tIF :NEW.[". $field ."] IS NULL THEN\n";
+  $query .= "\t\tSELECT [". $seq ."].NEXTVAL\n";
+  $query .= "\t\tINTO :NEW.[". $field ."]\n";
+  $query .= "\t\tFROM DUAL;\n";
+  $query .= "\tEND IF;\n";
+  $query .= "END;";
+  return $query;
+}
+
+function _db_create_index_sql($table, $name, $fields) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  return 'CREATE INDEX ['. $ix .'] ON [{'. $table .'}] ('. _db_create_key_sql($fields) .')';
+}
+
+function _db_create_key_sql($fields) {
+  $ret = array();
+  foreach ($fields as $field) {
+    if (is_array($field)) {
+      $ret[] = DB_SUBSTR .'(['. $field[0] .'], 1, '. $field[1] .')';
+    }
+    else {
+      $ret[] = '['. $field .']';
+    }
+  }
+  return implode(', ', $ret);
+}
+
+function _db_create_keys(&$ret, $table, $key_news) {
+  if (isset($key_news['primary key'])) {
+    db_add_primary_key($ret, $table, $key_news['primary key']);
+  }
+  if (isset($key_news['unique keys'])) {
+    foreach ($key_news['unique keys'] as $name => $fields) {
+      db_add_unique_key($ret, $table, $name, $fields);
+    }
+  }
+  if (isset($key_news['indexes'])) {
+    foreach ($key_news['indexes'] as $name => $fields) {
+      db_add_index($ret, $table, $name, $fields);
+    }
+  }
+}
+
+/**
+ * Set database-engine specific properties for a field.
+ *
+ * @param $field
+ *   A field description array, as specified in the schema documentation.
+ */
+function _db_process_field($field) {
+  if (!isset($field['size'])) {
+    $field['size'] = 'normal';
+  }
+
+  // Set the correct database-engine specific datatype.
+  if (!isset($field['oracle_type'])) {
+    $map = db_type_map();
+    $field['oracle_type'] = $map[$field['type'] .':'. $field['size']];
+  }
+
+  if ($field['type'] == 'serial') {
+    unset($field['not null']);
+  }
+
+  return $field;
+}
+
+/**
+ * Create an SQL string for a field to be used in table creation or alteration.
+ *
+ * Before passing a field out of a schema definition into this function it has
+ * to be processed by _db_process_field().
+ *
+ * @param $name
+ *    Name of the field.
+ * @param $spec
+ *    The field specification, as per the schema data structure format.
+ * @param $table
+ *    Name of the table. Useful if required to create sequence and trigger.
+ * @param $extra_sql
+ *    Array of extra queries. Useful if required to create sequence and trigger.
+ */
+function _db_create_field_sql($name, $spec) {
+  $sql = '['. $name .'] '. $spec['oracle_type'];
+
+  if (!empty($spec['length'])) {
+    $sql .= '('. $spec['length'] .')';
+  }
+  elseif (isset($spec['precision']) && isset($spec['scale'])) {
+    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
+  }
+
+  if (($spec['type'] == 'text') || ($spec['type'] == 'varchar')) {
+    if (isset($spec['not null']) && (!isset($spec['default']) || $spec['default'] == '')) {
+      $spec['default'] = ORACLE_EMPTY_STRING_PLACEHOLDER;
+    }
+  }
+  if (isset($spec['default'])) {
+    switch ($spec['type']) {
+      case 'blob':
+        $default = 'EMPTY_BLOB()';
+        break;
+      case 'text':
+      case 'varchar':
+        $default = "'". $spec['default'] ."'";
+        break;
+      default:
+        $default = is_string($spec['default']) ? "'". $spec['default'] ."'" : $spec['default'];
+    }
+    $sql .= " DEFAULT $default";
+  }
+
+  if (isset($spec['not null']) && $spec['not null']) {
+    $sql .= ' NOT NULL';
+  }
+
+  if (!empty($spec['unsigned'])) {
+    $sql .= ' CHECK (['. $name .'] >= 0)';
+  }
+
+  return $sql;
+}
+
+/**
+ * Rename a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be renamed.
+ * @param $new_name
+ *   The new name for the table.
+ */
+function db_rename_table(&$ret, $table, $new_name) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] RENAME TO [{'. $new_name .'}]');
+}
+
+/**
+ * Drop a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be dropped.
+ */
+function db_drop_table(&$ret, $table) {
+  $ret[] = update_sql('DROP TABLE [{'. $table .'}] CASCADE CONSTRAINTS');
+}
+
+/**
+ * Add a new field to a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table to be altered.
+ * @param $field
+ *   Name of the field to be added.
+ * @param $spec
+ *   The field specification array, as taken from a schema definition.
+ *   The specification may also contain the key 'initial', the newly
+ *   created field will be set to the value of the key in all rows.
+ *   This is most useful for creating NOT NULL columns with no default
+ *   value in existing tables.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with adding the field. The format is the same as a
+ *   table specification but without the 'fields' element.  If you are
+ *   adding a type 'serial' field, you MUST specify at least one key
+ *   or index including it in this array. @see db_change_field for more
+ *   explanation why.
+ */
+function db_add_field(&$ret, $table, $field, $spec, $keys_new = array()) {
+  $spec = _db_process_field($field);
+  $queries[] = 'ALTER TABLE [{'. $table .'}] ADD '. _db_create_field_sql($field, $spec);
+  if ($spec['type'] == 'serial') {
+    $queries[] = _db_create_sequence_sql($table, $field);
+    $queries[] = _db_create_trigger_sql($table, $field);
+  }
+  foreach ($queries as $query) {
+    $ret[] = update_sql($query);
+  }
+  if (isset($keys_new)) {
+    _db_create_keys($ret, $table, $keys_new);
+  }
+}
+
+/**
+ * Drop a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be dropped.
+ */
+function db_drop_field(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP COLUMN ['. $field .']');
+}
+
+/**
+ * Set the default value for a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ * @param $default
+ *   Default value to be set. NULL for 'default NULL'.
+ */
+function db_field_set_default(&$ret, $table, $field, $default) {
+  if ($default == NULL) {
+    $default = 'NULL';
+  }
+  else {
+    $default = is_string($default) ? "'$default'" : $default;
+  }
+
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] MODIFY (['. $field .'] DEFAULT '. $default .')');
+}
+
+/**
+ * Set a field to have no default value.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ */
+function db_field_set_no_default(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] MODIFY (['. $field .'] DEFAULT NULL)');
+}
+
+/**
+ * Add a primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $fields
+ *   Fields for the primary key.
+ */
+function db_add_primary_key(&$ret, $table, $fields) {
+  $pk = 'pk_{'. $table .'}';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $pk .'] PRIMARY KEY (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop the primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ */
+function db_drop_primary_key(&$ret, $table) {
+  $pk = 'pk_{'. $table .'}';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $pk .']');
+}
+
+/**
+ * Add a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_unique_key(&$ret, $table, $name, $fields) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $ix .'] UNIQUE (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ */
+function db_drop_unique_key(&$ret, $table, $name) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $ix .']');
+}
+
+/**
+ * Add an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ * @param $fields
+ *   An array of field names.
+ *
+ * NOTE: Need to do some checking before add index, since
+ * Oracle don't allow create index on promary key.
+ */
+function db_add_index(&$ret, $table, $name, $fields) {
+  if (db_constraint_exists($table, $fields)) {
+    $ret[] = update_sql(_db_create_index_sql($table, $name, $fields));
+  }
+}
+
+/**
+ * Drop an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ */
+function db_drop_index(&$ret, $table, $name) {
+  $ix = 'ix_{'. $table .'}_'. $name;
+  $ret[] = update_sql('DROP INDEX ['. $ix .']');
+}
+
+/**
+ * Change a field definition.
+ *
+ * IMPORTANT NOTE: To maintain database portability, you have to explicitly
+ * recreate all indices and primary keys that are using the changed field.
+ *
+ * That means that you have to drop all affected keys and indexes with
+ * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
+ * To recreate the keys and indices, pass the key definitions as the
+ * optional $keys_new argument directly to db_change_field().
+ *
+ * For example, suppose you have:
+ * @code
+ * $schema['foo'] = array(
+ *   'fields' => array(
+ *     'bar' => array('type' => 'int', 'not null' => TRUE)
+ *   ),
+ *   'primary key' => array('bar')
+ * );
+ * @endcode
+ * and you want to change foo.bar to be type serial, leaving it as the
+ * primary key.  The correct sequence is:
+ * @code
+ * db_drop_primary_key($ret, 'foo');
+ * db_change_field($ret, 'foo', 'bar', 'bar',
+ *   array('type' => 'serial', 'not null' => TRUE),
+ *   array('primary key' => array('bar')));
+ * @endcode
+ *
+ * The reasons for this are due to the different database engines:
+ *
+ * On PostgreSQL, changing a field definition involves adding a new field
+ * and dropping an old one which* causes any indices, primary keys and
+ * sequences (from serial-type fields) that use the changed field to be dropped.
+ *
+ * On MySQL, all type 'serial' fields must be part of at least one key
+ * or index as soon as they are created.  You cannot use
+ * db_add_{primary_key,unique_key,index}() for this purpose because
+ * the ALTER TABLE command will fail to add the column without a key
+ * or index specification.  The solution is to use the optional
+ * $keys_new argument to create the key or index at the same time as
+ * field.
+ *
+ * You could use db_add_{primary_key,unique_key,index}() in all cases
+ * unless you are converting a field to be type serial. You can use
+ * the $keys_new argument in all cases.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table.
+ * @param $field
+ *   Name of the field to change.
+ * @param $field_new
+ *   New name for the field (set to the same as $field if you don't want to change the name).
+ * @param $spec
+ *   The field specification for the new field.
+ * @param $key_news
+ *   Optional keys and indexes specification to be created on the
+ *   table along with changing the field. The format is the same as a
+ *   table specification but without the 'fields' element.
+ */
+function db_change_field(&$ret, $table, $field, $field_new, $spec, $key_news = array()) {
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] RENAME $field TO [old_". $field .']');
+  $not_null = isset($spec['not null']) ? $spec['not null'] : FALSE;
+  unset($spec['not null']);
+
+  db_add_field($ret, $table, "$field_new", $spec);
+
+  $ret[] = update_sql("UPDATE [{". $table ."}] SET [$field_new] = [old_". $field .']');
+
+  if ($not_null) {
+    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$field_new] SET NOT NULL");
+  }
+
+  db_drop_field($ret, $table, 'old_'. $field);
+
+  if (isset($key_news)) {
+    _db_create_keys($ret, $table, $key_news);
+  }
+}
+
+/**
+ * @} End of "ingroup schemaapi".
+ */
Index: includes/schema.postgresql.inc
===================================================================
RCS file: includes/schema.postgresql.inc
diff -N includes/schema.postgresql.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/schema.postgresql.inc	3 Apr 2008 07:55:02 -0000
@@ -0,0 +1,495 @@
+<?php
+// $Id: schema.postgresql.inc,v 1.1 2007/12/09 17:46:01 hswong3i Exp $
+
+/**
+ * @file
+ * Schema API shared between pgsql and pdo_pgsql database engines.
+ */
+
+/**
+ * @ingroup schemaapi
+ * @{
+ */
+
+/**
+ * This maps a generic data type in combination with its data size
+ * to the engine-specific data type.
+ */
+function db_type_map() {
+  // Put :normal last so it gets preserved by array_flip.  This makes
+  // it much easier for modules (such as schema.module) to map
+  // database types back into schema types.
+  $map = array(
+    'varchar:normal'  => 'VARCHAR',
+    'char:normal'     => 'CHARACTER',
+
+    'text:tiny'       => 'TEXT',
+    'text:small'      => 'TEXT',
+    'text:medium'     => 'TEXT',
+    'text:big'        => 'TEXT',
+    'text:normal'     => 'TEXT',
+
+    'serial:tiny'     => 'SERIAL',
+    'serial:small'    => 'SERIAL',
+    'serial:medium'   => 'SERIAL',
+    'serial:big'      => 'BIGSERIAL',
+    'serial:normal'   => 'SERIAL',
+
+    'int:tiny'        => 'SMALLINT',
+    'int:small'       => 'SMALLINT',
+    'int:medium'      => 'INT',
+    'int:big'         => 'BIGINT',
+    'int:normal'      => 'INT',
+
+    'float:tiny'      => 'REAL',
+    'float:small'     => 'REAL',
+    'float:medium'    => 'REAL',
+    'float:big'       => 'DOUBLE PRECISION',
+    'float:normal'    => 'REAL',
+
+    'numeric:normal'  => 'NUMERIC',
+
+    'blob:big'        => 'BYTEA',
+    'blob:normal'     => 'BYTEA',
+
+    'datetime:normal' => 'TIMESTAMP',
+  );
+  return $map;
+}
+
+/**
+ * Generate SQL to create a new table from a Drupal schema definition.
+ *
+ * @param $name
+ *   The name of the table to create.
+ * @param $table
+ *   A Schema API table definition array.
+ * @return
+ *   An array of SQL statements to create the table.
+ */
+function db_create_table_sql($name, $table) {
+  $sql_fields = array();
+  foreach ($table['fields'] as $field_name => $field) {
+    $sql_fields[] = _db_create_field_sql($field_name, _db_process_field($field));
+  }
+
+  $sql_keys = array();
+  if (isset($table['primary key']) && is_array($table['primary key'])) {
+    $sql_keys[] = 'PRIMARY KEY (['. implode('], [', $table['primary key']) .'])';
+  }
+  if (isset($table['unique keys']) && is_array($table['unique keys'])) {
+    foreach ($table['unique keys'] as $key_name => $key) {
+      $sql_keys[] = 'CONSTRAINT [{'. $name .'}_'. $key_name .'_key] UNIQUE (['. implode('], [', $key) .'])';
+    }
+  }
+
+  $sql = "CREATE TABLE [{". $name ."}] (\n\t";
+  $sql .= implode(",\n\t", $sql_fields);
+  if (count($sql_keys) > 0) {
+    $sql .= ",\n\t";
+  }
+  $sql .= implode(",\n\t", $sql_keys);
+  $sql .= "\n)";
+  $statements[] = $sql;
+
+  if (isset($table['indexes']) && is_array($table['indexes'])) {
+    foreach ($table['indexes'] as $key_name => $key) {
+      $statements[] = _db_create_index_sql($name, $key_name, $key);
+    }
+  }
+
+  return $statements;
+}
+
+function _db_create_index_sql($table, $name, $fields) {
+  return 'CREATE INDEX [{'. $table .'}_'. $name .'_idx] ON [{'. $table .'}] ('. _db_create_key_sql($fields) .')';
+}
+
+function _db_create_key_sql($fields) {
+  $ret = array();
+  foreach ($fields as $field) {
+    if (is_array($field)) {
+      $ret[] = DB_SUBSTR .'(['. $field[0] .'], 1, '. $field[1] .')';
+    }
+    else {
+      $ret[] = '['. $field .']';
+    }
+  }
+  return implode(', ', $ret);
+}
+
+function _db_create_keys(&$ret, $table, $keys_new) {
+  if (isset($keys_new['primary key'])) {
+    db_add_primary_key($ret, $table, $keys_new['primary key']);
+  }
+  if (isset($keys_new['unique keys'])) {
+    foreach ($keys_new['unique keys'] as $name => $fields) {
+      db_add_unique_key($ret, $table, $name, $fields);
+    }
+  }
+  if (isset($keys_new['indexes'])) {
+    foreach ($keys_new['indexes'] as $name => $fields) {
+      db_add_index($ret, $table, $name, $fields);
+    }
+  }
+}
+
+/**
+ * Set database-engine specific properties for a field.
+ *
+ * @param $field
+ *   A field description array, as specified in the schema documentation.
+ */
+function _db_process_field($field) {
+  if (!isset($field['size'])) {
+    $field['size'] = 'normal';
+  }
+  // Set the correct database-engine specific datatype.
+  if (!isset($field['postgresql_type'])) {
+    $map = db_type_map();
+    $field['postgresql_type'] = $map[$field['type'] .':'. $field['size']];
+  }
+  if ($field['type'] == 'serial') {
+    unset($field['not null']);
+  }
+  return $field;
+}
+
+/**
+ * Create an SQL string for a field to be used in table creation or alteration.
+ *
+ * Before passing a field out of a schema definition into this function it has
+ * to be processed by _db_process_field().
+ *
+ * @param $name
+ *    Name of the field.
+ * @param $spec
+ *    The field specification, as per the schema data structure format.
+ */
+function _db_create_field_sql($name, $spec) {
+  $sql = '['. $name .'] '. $spec['postgresql_type'];
+
+  if ($spec['type'] == 'serial') {
+    unset($spec['not null']);
+  }
+
+  if (!empty($spec['unsigned'])) {
+    $sql .= " CHECK ([$name] >= 0)";
+  }
+
+  if (!empty($spec['length'])) {
+    $sql .= '('. $spec['length'] .')';
+  }
+  elseif (isset($spec['precision']) && isset($spec['scale'])) {
+    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
+  }
+
+  if (isset($spec['not null']) && $spec['not null']) {
+    $sql .= ' NOT NULL';
+  }
+
+  if (isset($spec['default'])) {
+    $default = is_string($spec['default']) ? "'". $spec['default'] ."'" : $spec['default'];
+    $sql .= " DEFAULT $default";
+  }
+
+  return $sql;
+}
+
+/**
+ * Rename a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be renamed.
+ * @param $new_name
+ *   The new name for the table.
+ */
+function db_rename_table(&$ret, $table, $new_name) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] RENAME TO [{'. $new_name .'}]');
+}
+
+/**
+ * Drop a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be dropped.
+ */
+function db_drop_table(&$ret, $table) {
+  $ret[] = update_sql('DROP TABLE [{'. $table .'}]');
+}
+
+/**
+ * Add a new field to a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table to be altered.
+ * @param $field
+ *   Name of the field to be added.
+ * @param $spec
+ *   The field specification array, as taken from a schema definition.
+ *   The specification may also contain the key 'initial', the newly
+ *   created field will be set to the value of the key in all rows.
+ *   This is most useful for creating NOT NULL columns with no default
+ *   value in existing tables.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with adding the field. The format is the same as a
+ *   table specification but without the 'fields' element.  If you are
+ *   adding a type 'serial' field, you MUST specify at least one key
+ *   or index including it in this array. @see db_change_field for more
+ *   explanation why.
+ */
+function db_add_field(&$ret, $table, $field, $spec, $keys_new = array()) {
+  $fixnull = FALSE;
+  if (!empty($spec['not null']) && !isset($spec['default'])) {
+    $fixnull = TRUE;
+    $spec['not null'] = FALSE;
+  }
+  $query = 'ALTER TABLE [{'. $table .'}] ADD COLUMN ';
+  $query .= _db_create_field_sql($field, _db_process_field($spec));
+  $ret[] = update_sql($query);
+  if (isset($spec['initial'])) {
+    // All this because update_sql does not support %-placeholders.
+    $sql = 'UPDATE [{'. $table .'}] SET '. $field .' = '. db_type_placeholder($spec['type']);
+    $result = db_query($sql, $spec['initial']);
+    $ret[] = array('success' => $result !== FALSE, 'query' => check_plain($sql .' ('. $spec['initial'] .')'));
+  }
+  if ($fixnull) {
+    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER $field SET NOT NULL");
+  }
+  if (isset($keys_new)) {
+    _db_create_keys($ret, $table, $keys_new);
+  }
+}
+
+/**
+ * Drop a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be dropped.
+ */
+function db_drop_field(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP COLUMN ['. $field .']');
+}
+
+/**
+ * Set the default value for a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ * @param $default
+ *   Default value to be set. NULL for 'default NULL'.
+ */
+function db_field_set_default(&$ret, $table, $field, $default) {
+  if ($default == NULL) {
+    $default = 'NULL';
+  }
+  else {
+    $default = is_string($default) ? "'$default'" : $default;
+  }
+
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] SET DEFAULT '. $default);
+}
+
+/**
+ * Set a field to have no default value.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ */
+function db_field_set_no_default(&$ret, $table, $field) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] DROP DEFAULT');
+}
+
+/**
+ * Add a primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $fields
+ *   Fields for the primary key.
+ */
+function db_add_primary_key(&$ret, $table, $fields) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD PRIMARY KEY (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop the primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ */
+function db_drop_primary_key(&$ret, $table) {
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT [{'. $table .'}_pkey]');
+}
+
+/**
+ * Add a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_unique_key(&$ret, $table, $name, $fields) {
+  $name = '{'. $table .'}_'. $name .'_key';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $name .'] UNIQUE (['. implode('], [', $fields) .'])');
+}
+
+/**
+ * Drop a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ */
+function db_drop_unique_key(&$ret, $table, $name) {
+  $name = '{'. $table .'}_'. $name .'_key';
+  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $name .']');
+}
+
+/**
+ * Add an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ * @param $fields
+ *   An array of field names.
+ */
+function db_add_index(&$ret, $table, $name, $fields) {
+  $ret[] = update_sql(_db_create_index_sql($table, $name, $fields));
+}
+
+/**
+ * Drop an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ */
+function db_drop_index(&$ret, $table, $name) {
+  $name = '{'. $table .'}_'. $name .'_idx';
+  $ret[] = update_sql('DROP INDEX ['. $name .']');
+}
+
+/**
+ * Change a field definition.
+ *
+ * IMPORTANT NOTE: To maintain database portability, you have to explicitly
+ * recreate all indices and primary keys that are using the changed field.
+ *
+ * That means that you have to drop all affected keys and indexes with
+ * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
+ * To recreate the keys and indices, pass the key definitions as the
+ * optional $keys_new argument directly to db_change_field().
+ *
+ * For example, suppose you have:
+ * @code
+ * $schema['foo'] = array(
+ *   'fields' => array(
+ *     'bar' => array('type' => 'int', 'not null' => TRUE)
+ *   ),
+ *   'primary key' => array('bar')
+ * );
+ * @endcode
+ * and you want to change foo.bar to be type serial, leaving it as the
+ * primary key.  The correct sequence is:
+ * @code
+ * db_drop_primary_key($ret, 'foo');
+ * db_change_field($ret, 'foo', 'bar', 'bar',
+ *   array('type' => 'serial', 'not null' => TRUE),
+ *   array('primary key' => array('bar')));
+ * @endcode
+ *
+ * The reasons for this are due to the different database engines:
+ *
+ * On PostgreSQL, changing a field definition involves adding a new field
+ * and dropping an old one which* causes any indices, primary keys and
+ * sequences (from serial-type fields) that use the changed field to be dropped.
+ *
+ * On MySQL, all type 'serial' fields must be part of at least one key
+ * or index as soon as they are created.  You cannot use
+ * db_add_{primary_key,unique_key,index}() for this purpose because
+ * the ALTER TABLE command will fail to add the column without a key
+ * or index specification.  The solution is to use the optional
+ * $keys_new argument to create the key or index at the same time as
+ * field.
+ *
+ * You could use db_add_{primary_key,unique_key,index}() in all cases
+ * unless you are converting a field to be type serial. You can use
+ * the $keys_new argument in all cases.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table.
+ * @param $field
+ *   Name of the field to change.
+ * @param $field_new
+ *   New name for the field (set to the same as $field if you don't want to change the name).
+ * @param $spec
+ *   The field specification for the new field.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with changing the field. The format is the same as a
+ *   table specification but without the 'fields' element.
+ */
+function db_change_field(&$ret, $table, $field, $field_new, $spec, $keys_new = array()) {
+  $ret[] = update_sql("ALTER TABLE [{". $table ."}] RENAME [$field] TO [". $field ."_old]");
+  $not_null = isset($spec['not null']) ? $spec['not null'] : FALSE;
+  unset($spec['not null']);
+
+  db_add_field($ret, $table, "$field_new", $spec);
+
+  $ret[] = update_sql("UPDATE [{". $table ."}] SET [$field_new] = [". $field ."_old]");
+
+  if ($not_null) {
+    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$field_new] SET NOT NULL");
+  }
+
+  db_drop_field($ret, $table, $field .'_old');
+
+  if (isset($keys_new)) {
+    _db_create_keys($ret, $table, $keys_new);
+  }
+}
+
+/**
+ * @} End of "ingroup schemaapi".
+ */
Index: includes/schema.sqlite.inc
===================================================================
RCS file: includes/schema.sqlite.inc
diff -N includes/schema.sqlite.inc
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ includes/schema.sqlite.inc	3 Apr 2008 07:55:02 -0000
@@ -0,0 +1,511 @@
+<?php
+// $Id: schema.sqlite.inc,v 1.1 2008/02/03 10:08:54 hswong3i Exp $
+
+/**
+ * @file
+ * Schema API shared between sqlite and pdo_sqlite database engines.
+ */
+
+/**
+ * @ingroup schemaapi
+ * @{
+ */
+
+/**
+ * This maps a generic data type in combination with its data size
+ * to the engine-specific data type.
+ */
+function db_type_map() {
+  // Put :normal last so it gets preserved by array_flip.  This makes
+  // it much easier for modules (such as schema.module) to map
+  // database types back into schema types.
+  $map = array(
+    'varchar:normal'  => 'TEXT',
+    'char:normal'     => 'TEXT',
+
+    'text:tiny'       => 'TEXT',
+    'text:small'      => 'TEXT',
+    'text:medium'     => 'TEXT',
+    'text:big'        => 'TEXT',
+    'text:normal'     => 'TEXT',
+
+    'serial:tiny'     => 'INTEGER',
+    'serial:small'    => 'INTEGER',
+    'serial:medium'   => 'INTEGER',
+    'serial:big'      => 'INTEGER',
+    'serial:normal'   => 'INTEGER',
+
+    'int:tiny'        => 'INTEGER',
+    'int:small'       => 'INTEGER',
+    'int:medium'      => 'INTEGER',
+    'int:big'         => 'INTEGER',
+    'int:normal'      => 'INTEGER',
+
+    'float:tiny'      => 'REAL',
+    'float:small'     => 'REAL',
+    'float:medium'    => 'REAL',
+    'float:big'       => 'REAL',
+    'float:normal'    => 'REAL',
+
+    'numeric:normal'  => 'NUMERIC',
+
+    'blob:big'        => 'BLOB',
+    'blob:normal'     => 'BLOB',
+
+    'datetime:normal' => 'TEXT',
+  );
+  return $map;
+}
+
+/**
+ * Generate SQL to create a new table from a Drupal schema definition.
+ *
+ * @param $name
+ *   The name of the table to create.
+ * @param $table
+ *   A Schema API table definition array.
+ * @return
+ *   An array of SQL statements to create the table.
+ */
+function db_create_table_sql($name, $table) {
+  $sql_fields = array();
+  foreach ($table['fields'] as $field_name => $field) {
+    if ($field['type'] == 'serial' && isset($table['primary key']) && in_array($field_name, $table['primary key'])) {
+      unset($table['primary key']);
+    }
+    $sql_fields[] = _db_create_field_sql($field_name, _db_process_field($field));
+  }
+
+  $sql_keys = array();
+  if (isset($table['primary key']) && is_array($table['primary key'])) {
+    $sql_keys[] = 'PRIMARY KEY (['. implode('], [', $table['primary key']) .'])';
+  }
+  if (isset($table['unique keys']) && is_array($table['unique keys'])) {
+    foreach ($table['unique keys'] as $key_name => $key) {
+      $sql_keys[] = 'UNIQUE (['. implode('], [', $key) .'])';
+    }
+  }
+
+  $sql = "CREATE TABLE [{". $name ."}] (\n\t";
+  $sql .= implode(",\n\t", $sql_fields);
+  if (count($sql_keys) > 0) {
+    $sql .= ",\n\t";
+  }
+  $sql .= implode(",\n\t", $sql_keys);
+  $sql .= "\n)";
+  $statements[] = $sql;
+
+  if (isset($table['indexes']) && is_array($table['indexes'])) {
+    foreach ($table['indexes'] as $key_name => $key) {
+      $statements[] = _db_create_index_sql($name, $key_name, $key);
+    }
+  }
+
+  // In case of SQLite, use transection to ensure atomic CREATE TABLE.
+  return array_merge(
+    array('BEGIN'),
+    $statements,
+    array('COMMIT')
+  );
+}
+
+function _db_create_index_sql($table, $name, $fields) {
+  return 'CREATE INDEX [ix_{'. $table .'}_'. $name .'] ON [{'. $table .'}] ('. _db_create_key_sql($fields) .')';
+}
+
+function _db_create_key_sql($fields) {
+  $ret = array();
+  foreach ($fields as $field) {
+    if (is_array($field)) {
+      $ret[] = '['. $field[0] .']';
+    }
+    else {
+      $ret[] = '['. $field .']';
+    }
+  }
+  return implode(', ', $ret);
+}
+
+//function _db_create_keys(&$ret, $table, $keys_new) {
+//  if (isset($keys_new['primary key'])) {
+//    db_add_primary_key($ret, $table, $keys_new['primary key']);
+//  }
+//  if (isset($keys_new['unique keys'])) {
+//    foreach ($keys_new['unique keys'] as $name => $fields) {
+//      db_add_unique_key($ret, $table, $name, $fields);
+//    }
+//  }
+//  if (isset($keys_new['indexes'])) {
+//    foreach ($keys_new['indexes'] as $name => $fields) {
+//      db_add_index($ret, $table, $name, $fields);
+//    }
+//  }
+//}
+
+/**
+ * Set database-engine specific properties for a field.
+ *
+ * @param $field
+ *   A field description array, as specified in the schema documentation.
+ */
+function _db_process_field($field) {
+  if (!isset($field['size'])) {
+    $field['size'] = 'normal';
+  }
+
+  // Set the correct database-engine specific datatype.
+  if (!isset($field['sqlite_type'])) {
+    $map = db_type_map();
+    $field['sqlite_type'] = $map[$field['type'] .':'. $field['size']];
+  }
+
+  if ($field['type'] == 'serial') {
+    $field['auto_increment'] = TRUE;
+  }
+
+  if ($field['type'] == 'varchar' || $field['type'] == 'char') {
+    unset($field['length']);
+  }
+
+  return $field;
+}
+
+/**
+ * Create an SQL string for a field to be used in table creation or alteration.
+ *
+ * Before passing a field out of a schema definition into this function it has
+ * to be processed by _db_process_field().
+ *
+ * @param $name
+ *    Name of the field.
+ * @param $spec
+ *    The field specification, as per the schema data structure format.
+ */
+function _db_create_field_sql($name, $spec) {
+  $sql = '['. $name .'] '. $spec['sqlite_type'];
+
+  if (!empty($spec['auto_increment'])) {
+    $sql .= ' PRIMARY KEY AUTOINCREMENT';
+    return $sql;
+  }
+
+  if (!empty($spec['unsigned'])) {
+    $sql .= " CHECK ([$name] >= 0)";
+  }
+
+  if (!empty($spec['length'])) {
+    $sql .= '('. $spec['length'] .')';
+  }
+  elseif (isset($spec['precision']) && isset($spec['scale'])) {
+    $sql .= '('. $spec['precision'] .', '. $spec['scale'] .')';
+  }
+
+  if (isset($spec['not null']) && $spec['not null']) {
+    $sql .= ' NOT NULL';
+  }
+
+  if (isset($spec['default'])) {
+    $default = is_string($spec['default']) ? "'". $spec['default'] ."'" : $spec['default'];
+    $sql .= " DEFAULT $default";
+  }
+
+  return $sql;
+}
+
+/**
+ * Rename a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be renamed.
+ * @param $new_name
+ *   The new name for the table.
+ */
+//function db_rename_table(&$ret, $table, $new_name) {
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] RENAME TO [{'. $new_name .'}]');
+//}
+
+/**
+ * Drop a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be dropped.
+ */
+//function db_drop_table(&$ret, $table) {
+//  $ret[] = update_sql('DROP TABLE [{'. $table .'}]');
+//}
+
+/**
+ * Add a new field to a table.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table to be altered.
+ * @param $field
+ *   Name of the field to be added.
+ * @param $spec
+ *   The field specification array, as taken from a schema definition.
+ *   The specification may also contain the key 'initial', the newly
+ *   created field will be set to the value of the key in all rows.
+ *   This is most useful for creating NOT NULL columns with no default
+ *   value in existing tables.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with adding the field. The format is the same as a
+ *   table specification but without the 'fields' element.  If you are
+ *   adding a type 'serial' field, you MUST specify at least one key
+ *   or index including it in this array. @see db_change_field for more
+ *   explanation why.
+ */
+//function db_add_field(&$ret, $table, $field, $spec, $keys_new = array()) {
+//  $fixnull = FALSE;
+//  if (!empty($spec['not null']) && !isset($spec['default'])) {
+//    $fixnull = TRUE;
+//    $spec['not null'] = FALSE;
+//  }
+//  $query = 'ALTER TABLE [{'. $table .'}] ADD COLUMN ';
+//  $query .= _db_create_field_sql($field, _db_process_field($spec));
+//  $ret[] = update_sql($query);
+//  if (isset($spec['initial'])) {
+//    // All this because update_sql does not support %-placeholders.
+//    $sql = 'UPDATE [{'. $table .'}] SET '. $field .' = '. db_type_placeholder($spec['type']);
+//    $result = db_query($sql, $spec['initial']);
+//    $ret[] = array('success' => $result !== FALSE, 'query' => check_plain($sql .' ('. $spec['initial'] .')'));
+//  }
+//  if ($fixnull) {
+//    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER $field SET NOT NULL");
+//  }
+//  if (isset($keys_new)) {
+//    _db_create_keys($ret, $table, $keys_new);
+//  }
+//}
+
+/**
+ * Drop a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be dropped.
+ */
+//function db_drop_field(&$ret, $table, $field) {
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP COLUMN ['. $field .']');
+//}
+
+/**
+ * Set the default value for a field.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ * @param $default
+ *   Default value to be set. NULL for 'default NULL'.
+ */
+//function db_field_set_default(&$ret, $table, $field, $default) {
+//  if ($default == NULL) {
+//    $default = 'NULL';
+//  }
+//  else {
+//    $default = is_string($default) ? "'$default'" : $default;
+//  }
+//
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] SET DEFAULT '. $default);
+//}
+
+/**
+ * Set a field to have no default value.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $field
+ *   The field to be altered.
+ */
+//function db_field_set_no_default(&$ret, $table, $field) {
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ALTER COLUMN ['. $field .'] DROP DEFAULT');
+//}
+
+/**
+ * Add a primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $fields
+ *   Fields for the primary key.
+ */
+//function db_add_primary_key(&$ret, $table, $fields) {
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD PRIMARY KEY (['. implode('], [', $fields) .'])');
+//}
+
+/**
+ * Drop the primary key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ */
+//function db_drop_primary_key(&$ret, $table) {
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT [{'. $table .'}_pkey]');
+//}
+
+/**
+ * Add a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ * @param $fields
+ *   An array of field names.
+ */
+//function db_add_unique_key(&$ret, $table, $name, $fields) {
+//  $name = '{'. $table .'}_'. $name .'_key';
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] ADD CONSTRAINT ['. $name .'] UNIQUE (['. implode('], [', $fields) .'])');
+//}
+
+/**
+ * Drop a unique key.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the key.
+ */
+//function db_drop_unique_key(&$ret, $table, $name) {
+//  $name = '{'. $table .'}_'. $name .'_key';
+//  $ret[] = update_sql('ALTER TABLE [{'. $table .'}] DROP CONSTRAINT ['. $name .']');
+//}
+
+/**
+ * Add an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ * @param $fields
+ *   An array of field names.
+ */
+//function db_add_index(&$ret, $table, $name, $fields) {
+//  $ret[] = update_sql(_db_create_index_sql($table, $name, $fields));
+//}
+
+/**
+ * Drop an index.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   The table to be altered.
+ * @param $name
+ *   The name of the index.
+ */
+//function db_drop_index(&$ret, $table, $name) {
+//  $name = '{'. $table .'}_'. $name .'_idx';
+//  $ret[] = update_sql('DROP INDEX ['. $name .']');
+//}
+
+/**
+ * Change a field definition.
+ *
+ * IMPORTANT NOTE: To maintain database portability, you have to explicitly
+ * recreate all indices and primary keys that are using the changed field.
+ *
+ * That means that you have to drop all affected keys and indexes with
+ * db_drop_{primary_key,unique_key,index}() before calling db_change_field().
+ * To recreate the keys and indices, pass the key definitions as the
+ * optional $keys_new argument directly to db_change_field().
+ *
+ * For example, suppose you have:
+ * @code
+ * $schema['foo'] = array(
+ *   'fields' => array(
+ *     'bar' => array('type' => 'int', 'not null' => TRUE)
+ *   ),
+ *   'primary key' => array('bar')
+ * );
+ * @endcode
+ * and you want to change foo.bar to be type serial, leaving it as the
+ * primary key.  The correct sequence is:
+ * @code
+ * db_drop_primary_key($ret, 'foo');
+ * db_change_field($ret, 'foo', 'bar', 'bar',
+ *   array('type' => 'serial', 'not null' => TRUE),
+ *   array('primary key' => array('bar')));
+ * @endcode
+ *
+ * The reasons for this are due to the different database engines:
+ *
+ * On PostgreSQL, changing a field definition involves adding a new field
+ * and dropping an old one which* causes any indices, primary keys and
+ * sequences (from serial-type fields) that use the changed field to be dropped.
+ *
+ * On MySQL, all type 'serial' fields must be part of at least one key
+ * or index as soon as they are created.  You cannot use
+ * db_add_{primary_key,unique_key,index}() for this purpose because
+ * the ALTER TABLE command will fail to add the column without a key
+ * or index specification.  The solution is to use the optional
+ * $keys_new argument to create the key or index at the same time as
+ * field.
+ *
+ * You could use db_add_{primary_key,unique_key,index}() in all cases
+ * unless you are converting a field to be type serial. You can use
+ * the $keys_new argument in all cases.
+ *
+ * @param $ret
+ *   Array to which query results will be added.
+ * @param $table
+ *   Name of the table.
+ * @param $field
+ *   Name of the field to change.
+ * @param $field_new
+ *   New name for the field (set to the same as $field if you don't want to change the name).
+ * @param $spec
+ *   The field specification for the new field.
+ * @param $keys_new
+ *   Optional keys and indexes specification to be created on the
+ *   table along with changing the field. The format is the same as a
+ *   table specification but without the 'fields' element.
+ */
+//function db_change_field(&$ret, $table, $field, $field_new, $spec, $keys_new = array()) {
+//  $ret[] = update_sql("ALTER TABLE [{". $table ."}] RENAME [$field] TO [". $field ."_old]");
+//  $not_null = isset($spec['not null']) ? $spec['not null'] : FALSE;
+//  unset($spec['not null']);
+//
+//  db_add_field($ret, $table, "$field_new", $spec);
+//
+//  $ret[] = update_sql("UPDATE [{". $table ."}] SET [$field_new] = [". $field ."_old]");
+//
+//  if ($not_null) {
+//    $ret[] = update_sql("ALTER TABLE [{". $table ."}] ALTER [$field_new] SET NOT NULL");
+//  }
+//
+//  db_drop_field($ret, $table, $field .'_old');
+//
+//  if (isset($keys_new)) {
+//    _db_create_keys($ret, $table, $keys_new);
+//  }
+//}
+
+/**
+ * @} End of "ingroup schemaapi".
+ */
Index: includes/session.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/session.inc,v
retrieving revision 1.44.2.1
diff -u -p -r1.44.2.1 session.inc
--- includes/session.inc	7 Feb 2008 11:58:40 -0000	1.44.2.1
+++ includes/session.inc	3 Apr 2008 07:55:02 -0000
@@ -29,7 +29,7 @@ function sess_read($key) {
   }
 
   // Otherwise, if the session is still active, we have a record of the client's session in the database.
-  $user = db_fetch_object(db_query("SELECT u.*, s.* FROM {users} u INNER JOIN {sessions} s ON u.uid = s.uid WHERE s.sid = '%s'", $key));
+  $user = db_fetch_object(db_query("SELECT u.*, s.* FROM [{users}] u INNER JOIN [{sessions}] s ON u.[uid] = s.[uid] WHERE s.[sid] = %s", $key));
 
   // We found the client's session record and they are an authenticated user
   if ($user && $user->uid > 0) {
@@ -39,7 +39,7 @@ function sess_read($key) {
     // Add roles element to $user
     $user->roles = array();
     $user->roles[DRUPAL_AUTHENTICATED_RID] = 'authenticated user';
-    $result = db_query("SELECT r.rid, r.name FROM {role} r INNER JOIN {users_roles} ur ON ur.rid = r.rid WHERE ur.uid = %d", $user->uid);
+    $result = db_query("SELECT r.[rid], r.[name] FROM [{role}] r INNER JOIN [{users_roles}] ur ON ur.[rid] = r.[rid] WHERE ur.[uid] = %d", $user->uid);
     while ($role = db_fetch_object($result)) {
       $user->roles[$role->rid] = $role->name;
     }
@@ -62,7 +62,7 @@ function sess_write($key, $value) {
     return TRUE;
   }
 
-  $result = db_result(db_query("SELECT COUNT(*) FROM {sessions} WHERE sid = '%s'", $key));
+  $result = db_result(db_query("SELECT COUNT(*) FROM [{sessions}] WHERE [sid] = %s", $key));
 
   if (!$result) {
     // Only save session data when when the browser sends a cookie. This keeps
@@ -70,16 +70,16 @@ function sess_write($key, $value) {
     // and gives more useful statistics. We can't eliminate anonymous session
     // table rows without breaking throttle module and "Who's Online" block.
     if ($user->uid || $value || count($_COOKIE)) {
-      db_query("INSERT INTO {sessions} (sid, uid, cache, hostname, session, timestamp) VALUES ('%s', %d, %d, '%s', '%s', %d)", $key, $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time());
+      db_query("INSERT INTO [{sessions}] ([sid], [uid], [cache], [hostname], [session], [timestamp]) VALUES (%s, %d, %d, %s, %s, %d)", $key, $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time());
     }
   }
   else {
-    db_query("UPDATE {sessions} SET uid = %d, cache = %d, hostname = '%s', session = '%s', timestamp = %d WHERE sid = '%s'", $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time(), $key);
+    db_query("UPDATE [{sessions}] SET [uid] = %d, [cache] = %d, [hostname] = %s, [session] = %s, [timestamp] = %d WHERE [sid] = %s", $user->uid, isset($user->cache) ? $user->cache : '', ip_address(), $value, time(), $key);
 
     // Last access time is updated no more frequently than once every 180 seconds.
     // This reduces contention in the users table.
     if ($user->uid && time() - $user->access > variable_get('session_write_interval', 180)) {
-      db_query("UPDATE {users} SET access = %d WHERE uid = %d", time(), $user->uid);
+      db_query("UPDATE [{users}] SET [access] = %d WHERE [uid] = %d", time(), $user->uid);
     }
   }
 
@@ -103,7 +103,7 @@ function sess_regenerate() {
 
   session_regenerate_id();
 
-  db_query("UPDATE {sessions} SET sid = '%s' WHERE sid = '%s'", session_id(), $old_session_id);
+  db_query("UPDATE [{sessions}] SET [sid] = %s WHERE [sid] = %s", session_id(), $old_session_id);
 }
 
 /**
@@ -120,8 +120,8 @@ function sess_regenerate() {
  *   The number of users with sessions.
  */
 function sess_count($timestamp = 0, $anonymous = true) {
-  $query = $anonymous ? ' AND uid = 0' : ' AND uid > 0';
-  return db_result(db_query('SELECT COUNT(sid) AS count FROM {sessions} WHERE timestamp >= %d'. $query, $timestamp));
+  $query = $anonymous ? ' AND [uid] = 0' : ' AND [uid] > 0';
+  return db_result(db_query('SELECT COUNT([sid]) AS [count] FROM [{sessions}] WHERE [timestamp] >= %d'. $query, $timestamp));
 }
 
 /**
@@ -131,7 +131,7 @@ function sess_count($timestamp = 0, $ano
  *   the session id
  */
 function sess_destroy_sid($sid) {
-  db_query("DELETE FROM {sessions} WHERE sid = '%s'", $sid);
+  db_query("DELETE FROM [{sessions}] WHERE [sid] = %s", $sid);
 }
 
 /**
@@ -141,7 +141,7 @@ function sess_destroy_sid($sid) {
  *   the user id
  */
 function sess_destroy_uid($uid) {
-  db_query('DELETE FROM {sessions} WHERE uid = %d', $uid);
+  db_query('DELETE FROM [{sessions}] WHERE [uid] = %d', $uid);
 }
 
 function sess_gc($lifetime) {
@@ -150,7 +150,7 @@ function sess_gc($lifetime) {
   // for three weeks before deleting them, you need to set gc_maxlifetime
   // to '1814400'. At that value, only after a user doesn't log in after
   // three weeks (1814400 seconds) will his/her session be removed.
-  db_query("DELETE FROM {sessions} WHERE timestamp < %d", time() - $lifetime);
+  db_query("DELETE FROM [{sessions}] WHERE [timestamp] < %d", time() - $lifetime);
 
   return TRUE;
 }
Index: includes/tablesort.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/tablesort.inc,v
retrieving revision 1.47
diff -u -p -r1.47 tablesort.inc
--- includes/tablesort.inc	4 Jan 2008 09:31:48 -0000	1.47
+++ includes/tablesort.inc	3 Apr 2008 07:55:02 -0000
@@ -40,7 +40,7 @@ function tablesort_sql($header, $before 
   $ts = tablesort_init($header);
   if ($ts['sql']) {
     // Based on code from db_escape_table(), but this can also contain a dot.
-    $field = preg_replace('/[^A-Za-z0-9_.]+/', '', $ts['sql']);
+    $field = preg_replace('/[^A-Za-z0-9_.\[\]]+/', '', $ts['sql']);
 
     // Sort order can only be ASC or DESC.
     $sort = drupal_strtoupper($ts['sort']);
Index: includes/theme.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.inc,v
retrieving revision 1.415
diff -u -p -r1.415 theme.inc
--- includes/theme.inc	27 Jan 2008 19:47:06 -0000	1.415
+++ includes/theme.inc	3 Apr 2008 07:55:02 -0000
@@ -418,7 +418,7 @@ function list_themes($refresh = FALSE) {
     // Extract from the database only when it is available.
     // Also check that the site is not in the middle of an install or update.
     if (db_is_active() && !defined('MAINTENANCE_MODE')) {
-      $result = db_query("SELECT * FROM {system} WHERE type = '%s'", 'theme');
+      $result = db_query("SELECT * FROM [{system}] WHERE [type] = %s", 'theme');
       while ($theme = db_fetch_object($result)) {
         if (file_exists($theme->filename)) {
           $theme->info = unserialize($theme->info);
@@ -1454,9 +1454,9 @@ function theme_more_help_link($url) {
 
 /**
  * Return code that emits an XML icon.
- * 
+ *
  * For most use cases, this function has been superseded by theme_feed_icon().
- * 
+ *
  * @see theme_feed_icon()
  * @param $url
  *   The url of the feed.
Index: includes/theme.maintenance.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.maintenance.inc,v
retrieving revision 1.10
diff -u -p -r1.10 theme.maintenance.inc
--- includes/theme.maintenance.inc	24 Jan 2008 09:42:50 -0000	1.10
+++ includes/theme.maintenance.inc	3 Apr 2008 07:55:02 -0000
@@ -124,7 +124,7 @@ function theme_install_page($content) {
     $variables['messages'] .= theme('status_messages', 'error');
     $variables['content'] .= '<p>'. st('Please check the error messages and <a href="!url">try again</a>.', array('!url' => request_uri())) .'</p>';
   }
-  
+
   // Special handling of warning messages
   if (isset($messages['warning'])) {
     $title = count($messages['warning']) > 1 ? st('The following installation warnings should be carefully reviewed') : st('The following installation warning should be carefully reviewed');
Index: misc/tabledrag.js
===================================================================
RCS file: /cvs/drupal/drupal/misc/tabledrag.js,v
retrieving revision 1.13.2.1
diff -u -p -r1.13.2.1 tabledrag.js
--- misc/tabledrag.js	8 Feb 2008 18:54:10 -0000	1.13.2.1
+++ misc/tabledrag.js	3 Apr 2008 07:55:02 -0000
@@ -693,7 +693,7 @@ Drupal.tableDrag.prototype.updateField =
           var maxVal = values[values.length - 1];
           // Populate the values in the siblings.
           $(targetClass, siblings).each(function() {
-            // If there are more items than possible values, assign the maximum value to the row. 
+            // If there are more items than possible values, assign the maximum value to the row.
             if (values.length > 0) {
               this.value = values.shift();
             }
Index: misc/textarea.js
===================================================================
RCS file: /cvs/drupal/drupal/misc/textarea.js,v
retrieving revision 1.22
diff -u -p -r1.22 textarea.js
--- misc/textarea.js	17 Jan 2008 19:31:56 -0000	1.22
+++ misc/textarea.js	3 Apr 2008 07:55:02 -0000
@@ -4,7 +4,7 @@ Drupal.behaviors.textarea = function(con
   $('textarea.resizable:not(.textarea-processed)', context).each(function() {
     // Avoid non-processed teasers.
     if ($(this).is(('textarea.teaser:not(.teaser-processed)'))) {
-      return false;  
+      return false;
     }
     var textarea = $(this).addClass('textarea-processed'), staticOffset = null;
 
Index: modules/aggregator/aggregator.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/aggregator/aggregator.admin.inc,v
retrieving revision 1.7
diff -u -p -r1.7 aggregator.admin.inc
--- modules/aggregator/aggregator.admin.inc	10 Jan 2008 22:47:17 -0000	1.7
+++ modules/aggregator/aggregator.admin.inc	3 Apr 2008 07:55:02 -0000
@@ -20,7 +20,7 @@ function aggregator_admin_overview() {
  *   The page HTML.
  */
 function aggregator_view() {
-  $result = db_query('SELECT f.*, COUNT(i.iid) AS items FROM {aggregator_feed} f LEFT JOIN {aggregator_item} i ON f.fid = i.fid GROUP BY f.fid, f.title, f.url, f.refresh, f.checked, f.link, f.description, f.etag, f.modified, f.image, f.block ORDER BY f.title');
+  $result = db_query('SELECT f.*, COUNT(i.[iid]) AS [items] FROM [{aggregator_feed}] f LEFT JOIN [{aggregator_item}] i ON f.[fid] = i.[fid] GROUP BY f.[fid], f.[title], f.[url], f.[refresh], f.[checked], f.[link], f.[description], f.[etag], f.[modified], f.[image], f.[block] ORDER BY f.[title]');
 
   $output = '<h3>'. t('Feed overview') .'</h3>';
 
@@ -31,7 +31,7 @@ function aggregator_view() {
   }
   $output .= theme('table', $header, $rows);
 
-  $result = db_query('SELECT c.cid, c.title, count(ci.iid) as items FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid GROUP BY c.cid, c.title ORDER BY title');
+  $result = db_query('SELECT c.[cid], c.[title], COUNT(ci.[iid]) AS [items] FROM [{aggregator_category}] c LEFT JOIN [{aggregator_category_item}] ci ON c.[cid] = ci.[cid] GROUP BY c.[cid], c.[title] ORDER BY [title]');
 
   $output .= '<h3>'. t('Category overview') .'</h3>';
 
@@ -83,7 +83,7 @@ function aggregator_form_feed(&$form_sta
   // Handling of categories:
   $options = array();
   $values = array();
-  $categories = db_query('SELECT c.cid, c.title, f.fid FROM {aggregator_category} c LEFT JOIN {aggregator_category_feed} f ON c.cid = f.cid AND f.fid = %d ORDER BY title', $edit['fid']);
+  $categories = db_query('SELECT c.[cid], c.[title], f.[fid] FROM [{aggregator_category}] c LEFT JOIN [{aggregator_category_feed}] f ON c.[cid] = f.[cid] AND f.[fid] = %d ORDER BY [title]', $edit['fid']);
   while ($category = db_fetch_object($categories)) {
     $options[$category->cid] = check_plain($category->title);
     if ($category->fid) $values[] = $category->cid;
@@ -117,10 +117,10 @@ function aggregator_form_feed_validate($
     }
     // Check for duplicate titles.
     if (isset($form_state['values']['fid'])) {
-      $result = db_query("SELECT title, url FROM {aggregator_feed} WHERE (title = '%s' OR url='%s') AND fid != %d", $form_state['values']['title'], $form_state['values']['url'], $form_state['values']['fid']);
+      $result = db_query("SELECT [title], [url] FROM [{aggregator_feed}] WHERE ([title] = %s OR [url] = %s) AND [fid] <> %d", $form_state['values']['title'], $form_state['values']['url'], $form_state['values']['fid']);
     }
     else {
-      $result = db_query("SELECT title, url FROM {aggregator_feed} WHERE title = '%s' OR url='%s'", $form_state['values']['title'], $form_state['values']['url']);
+      $result = db_query("SELECT [title], [url] FROM [{aggregator_feed}] WHERE [title] = %s OR [url] = %s", $form_state['values']['title'], $form_state['values']['url']);
     }
     while ($feed = db_fetch_object($result)) {
       if (strcasecmp($feed->title, $form_state['values']['title']) == 0) {
@@ -286,10 +286,10 @@ function aggregator_form_category_valida
   if ($form_state['values']['op'] == t('Save')) {
     // Check for duplicate titles
     if (isset($form_state['values']['cid'])) {
-      $category = db_fetch_object(db_query("SELECT cid FROM {aggregator_category} WHERE title = '%s' AND cid != %d", $form_state['values']['title'], $form_state['values']['cid']));
+      $category = db_fetch_object(db_query("SELECT [cid] FROM [{aggregator_category}] WHERE [title] = %s AND [cid] <> %d", $form_state['values']['title'], $form_state['values']['cid']));
     }
     else {
-      $category = db_fetch_object(db_query("SELECT cid FROM {aggregator_category} WHERE title = '%s'", $form_state['values']['title']));
+      $category = db_fetch_object(db_query("SELECT [cid] FROM [{aggregator_category}] WHERE [title] = %s", $form_state['values']['title']));
     }
     if ($category) {
       form_set_error('title', t('A category named %category already exists. Please enter a unique title.', array('%category' => $form_state['values']['title'])));
Index: modules/aggregator/aggregator.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/aggregator/aggregator.install,v
retrieving revision 1.14
diff -u -p -r1.14 aggregator.install
--- modules/aggregator/aggregator.install	18 Dec 2007 12:59:20 -0000	1.14
+++ modules/aggregator/aggregator.install	3 Apr 2008 07:55:02 -0000
@@ -44,6 +44,7 @@ function aggregator_schema() {
       'description' => array(
         'type' => 'text',
         'not null' => TRUE,
+        'default' => '',
         'size' => 'big',
         'description' => t('Description of the category'),
       ),
@@ -143,12 +144,14 @@ function aggregator_schema() {
       'description' => array(
         'type' => 'text',
         'not null' => TRUE,
+        'default' => '',
         'size' => 'big',
         'description' => t("The parent website's description; comes from the <description> element in the feed."),
       ),
       'image' => array(
         'type' => 'text',
         'not null' => TRUE,
+        'default' => '',
         'size' => 'big',
         'description' => t('An image representing the feed.'),
       ),
@@ -216,8 +219,9 @@ function aggregator_schema() {
         'description' => t('Author of the feed item.'),
       ),
       'description' => array(
-        'type' => 'text',
+        'type' => 'blob',
         'not null' => TRUE,
+        'default' => '',
         'size' => 'big',
         'description' => t('Body of the feed item.'),
       ),
Index: modules/aggregator/aggregator.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/aggregator/aggregator.module,v
retrieving revision 1.374
diff -u -p -r1.374 aggregator.module
--- modules/aggregator/aggregator.module	15 Jan 2008 08:06:32 -0000	1.374
+++ modules/aggregator/aggregator.module	3 Apr 2008 07:55:02 -0000
@@ -270,7 +270,7 @@ function aggregator_init() {
  *   TRUE if there is at least one category and the user has access to them, FALSE otherwise.
  */
 function _aggregator_has_categories() {
-  return user_access('access news feeds') && db_result(db_query('SELECT COUNT(*) FROM {aggregator_category}'));
+  return user_access('access news feeds') && db_result(db_query('SELECT COUNT(*) FROM [{aggregator_category}]'));
 }
 
 /**
@@ -286,7 +286,7 @@ function aggregator_perm() {
  * Checks news feeds for updates once their refresh interval has elapsed.
  */
 function aggregator_cron() {
-  $result = db_query('SELECT * FROM {aggregator_feed} WHERE checked + refresh < %d', time());
+  $result = db_query('SELECT * FROM [{aggregator_feed}] WHERE [checked] + [refresh] < %d', time());
   while ($feed = db_fetch_array($result)) {
     aggregator_refresh($feed);
   }
@@ -300,11 +300,11 @@ function aggregator_cron() {
 function aggregator_block($op = 'list', $delta = 0, $edit = array()) {
   if (user_access('access news feeds')) {
     if ($op == 'list') {
-      $result = db_query('SELECT cid, title FROM {aggregator_category} ORDER BY title');
+      $result = db_query('SELECT [cid], [title] FROM [{aggregator_category}] ORDER BY [title]');
       while ($category = db_fetch_object($result)) {
         $block['category-'. $category->cid]['info'] = t('!title category latest items', array('!title' => $category->title));
       }
-      $result = db_query('SELECT fid, title FROM {aggregator_feed} ORDER BY fid');
+      $result = db_query('SELECT [fid], [title] FROM [{aggregator_feed}] ORDER BY [fid]');
       while ($feed = db_fetch_object($result)) {
         $block['feed-'. $feed->fid]['info'] = t('!title feed latest items', array('!title' => $feed->title));
       }
@@ -312,10 +312,10 @@ function aggregator_block($op = 'list', 
     else if ($op == 'configure') {
       list($type, $id) = explode('-', $delta);
       if ($type == 'category') {
-        $value = db_result(db_query('SELECT block FROM {aggregator_category} WHERE cid = %d', $id));
+        $value = db_result(db_query('SELECT [block] FROM [{aggregator_category}] WHERE [cid] = %d', $id));
       }
       else {
-        $value = db_result(db_query('SELECT block FROM {aggregator_feed} WHERE fid = %d', $id));
+        $value = db_result(db_query('SELECT [block] FROM [{aggregator_feed}] WHERE [fid] = %d', $id));
       }
       $form['block'] = array('#type' => 'select', '#title' => t('Number of news items in block'), '#default_value' => $value, '#options' => drupal_map_assoc(array(2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)));
       return $form;
@@ -323,27 +323,27 @@ function aggregator_block($op = 'list', 
     else if ($op == 'save') {
       list($type, $id) = explode('-', $delta);
       if ($type == 'category') {
-        $value = db_query('UPDATE {aggregator_category} SET block = %d WHERE cid = %d', $edit['block'], $id);
+        $value = db_query('UPDATE [{aggregator_category}] SET [block] = %d WHERE [cid] = %d', $edit['block'], $id);
       }
       else {
-        $value = db_query('UPDATE {aggregator_feed} SET block = %d WHERE fid = %d', $edit['block'], $id);
+        $value = db_query('UPDATE [{aggregator_feed}] SET [block] = %d WHERE [fid] = %d', $edit['block'], $id);
       }
     }
     else if ($op == 'view') {
       list($type, $id) = explode('-', $delta);
       switch ($type) {
         case 'feed':
-          if ($feed = db_fetch_object(db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE fid = %d', $id))) {
+          if ($feed = db_fetch_object(db_query('SELECT [fid], [title], [block] FROM [{aggregator_feed}] WHERE [fid] = %d', $id))) {
             $block['subject'] = check_plain($feed->title);
-            $result = db_query_range('SELECT * FROM {aggregator_item} WHERE fid = %d ORDER BY timestamp DESC, iid DESC', $feed->fid, 0, $feed->block);
+            $result = db_query_range('SELECT * FROM [{aggregator_item}] WHERE [fid] = %d ORDER BY [timestamp] DESC, [iid] DESC', $feed->fid, 0, $feed->block);
             $read_more = theme('more_link', url('aggregator/sources/'. $feed->fid), t("View this feed's recent news."));
           }
           break;
 
         case 'category':
-          if ($category = db_fetch_object(db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = %d', $id))) {
+          if ($category = db_fetch_object(db_query('SELECT [cid], [title], [block] FROM [{aggregator_category}] WHERE [cid] = %d', $id))) {
             $block['subject'] = check_plain($category->title);
-            $result = db_query_range('SELECT i.* FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON ci.iid = i.iid WHERE ci.cid = %d ORDER BY i.timestamp DESC, i.iid DESC', $category->cid, 0, $category->block);
+            $result = db_query_range('SELECT i.* FROM [{aggregator_category_item}] ci LEFT JOIN [{aggregator_item}] i ON ci.[iid] = i.[iid] WHERE ci.[cid] = %d ORDER BY i.[timestamp] DESC, i.[iid] DESC', $category->cid, 0, $category->block);
             $read_more = theme('more_link', url('aggregator/categories/'. $category->cid), t("View this category's recent news."));
           }
           break;
@@ -375,18 +375,18 @@ function aggregator_save_category($edit)
   if (!empty($edit['cid'])) {
     $link_path .= $edit['cid'];
     if (!empty($edit['title'])) {
-      db_query("UPDATE {aggregator_category} SET title = '%s', description = '%s' WHERE cid = %d", $edit['title'], $edit['description'], $edit['cid']);
+      db_query("UPDATE [{aggregator_category}] SET [title] = %s, [description] = %s WHERE [cid] = %d", $edit['title'], $edit['description'], $edit['cid']);
       $op = 'update';
     }
     else {
-      db_query('DELETE FROM {aggregator_category} WHERE cid = %d', $edit['cid']);
+      db_query('DELETE FROM [{aggregator_category}] WHERE [cid] = %d', $edit['cid']);
       $edit['title'] = '';
       $op = 'delete';
     }
   }
   else if (!empty($edit['title'])) {
     // A single unique id for bundles and feeds, to use in blocks
-    db_query("INSERT INTO {aggregator_category} (title, description, block) VALUES ('%s', '%s', 5)", $edit['title'], $edit['description']);
+    db_query("INSERT INTO [{aggregator_category}] ([title], [description], [block]) VALUES (%s, %s, %d)", $edit['title'], $edit['description'], 5);
     $link_path .= db_last_insert_id('aggregator', 'cid');
     $op = 'insert';
   }
@@ -404,25 +404,25 @@ function aggregator_save_category($edit)
 function aggregator_save_feed($edit) {
   if (!empty($edit['fid'])) {
     // An existing feed is being modified, delete the category listings.
-    db_query('DELETE FROM {aggregator_category_feed} WHERE fid = %d', $edit['fid']);
+    db_query('DELETE FROM [{aggregator_category_feed}] WHERE [fid] = %d', $edit['fid']);
   }
   if (!empty($edit['fid']) && !empty($edit['title'])) {
-    db_query("UPDATE {aggregator_feed} SET title = '%s', url = '%s', refresh = %d WHERE fid = %d", $edit['title'], $edit['url'], $edit['refresh'], $edit['fid']);
+    db_query("UPDATE [{aggregator_feed}] SET [title] = %s, [url] = %s, [refresh] = %d WHERE [fid] = %d", $edit['title'], $edit['url'], $edit['refresh'], $edit['fid']);
   }
   else if (!empty($edit['fid'])) {
     $items = array();
-    $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d', $edit['fid']);
+    $result = db_query('SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d', $edit['fid']);
     while ($item = db_fetch_object($result)) {
-      $items[] = "iid = $item->iid";
+      $items[] = "[iid] = $item->iid";
     }
     if (!empty($items)) {
-      db_query('DELETE FROM {aggregator_category_item} WHERE '. implode(' OR ', $items));
+      db_query('DELETE FROM [{aggregator_category_item}] WHERE '. implode(' OR ', $items));
     }
-    db_query('DELETE FROM {aggregator_feed} WHERE fid = %d', $edit['fid']);
-    db_query('DELETE FROM {aggregator_item} WHERE fid = %d', $edit['fid']);
+    db_query('DELETE FROM [{aggregator_feed}] WHERE [fid] = %d', $edit['fid']);
+    db_query('DELETE FROM [{aggregator_item}] WHERE [fid] = %d', $edit['fid']);
   }
   else if (!empty($edit['title'])) {
-    db_query("INSERT INTO {aggregator_feed} (title, url, refresh, block, description, image) VALUES ('%s', '%s', %d, 5, '', '')", $edit['title'], $edit['url'], $edit['refresh']);
+    db_query("INSERT INTO [{aggregator_feed}] ([title], [url], [refresh], [block], [description], [image]) VALUES (%s, %s, %d, %d, %s, %s)", $edit['title'], $edit['url'], $edit['refresh'], 5, '', '');
     // A single unique id for bundles and feeds, to use in blocks.
     $edit['fid'] = db_last_insert_id('aggregator_feed', 'fid');
   }
@@ -431,7 +431,7 @@ function aggregator_save_feed($edit) {
     if (!empty($edit['category'])) {
       foreach ($edit['category'] as $cid => $value) {
         if ($value) {
-          db_query('INSERT INTO {aggregator_category_feed} (fid, cid) VALUES (%d, %d)', $edit['fid'], $cid);
+          db_query('INSERT INTO [{aggregator_category_feed}] ([fid], [cid]) VALUES (%d, %d)', $edit['fid'], $cid);
         }
       }
     }
@@ -445,15 +445,15 @@ function aggregator_save_feed($edit) {
  *   An associative array describing the feed to be cleared.
  */
 function aggregator_remove($feed) {
-  $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d', $feed['fid']);
+  $result = db_query('SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d', $feed['fid']);
   while ($item = db_fetch_object($result)) {
-    $items[] = "iid = $item->iid";
+    $items[] = "[iid] = $item->iid";
   }
   if (!empty($items)) {
-    db_query('DELETE FROM {aggregator_category_item} WHERE '. implode(' OR ', $items));
+    db_query('DELETE FROM [{aggregator_category_item}] WHERE '. implode(' OR ', $items));
   }
-  db_query('DELETE FROM {aggregator_item} WHERE fid = %d', $feed['fid']);
-  db_query("UPDATE {aggregator_feed} SET checked = 0, etag = '', modified = 0 WHERE fid = %d", $feed['fid']);
+  db_query('DELETE FROM [{aggregator_item}] WHERE [fid] = %d', $feed['fid']);
+  db_query("UPDATE [{aggregator_feed}] SET [checked] = %d, [etag] = %s, [modified] = %d WHERE [fid] = %d", 0, '', 0, $feed['fid']);
   drupal_set_message(t('The news items from %site have been removed.', array('%site' => $feed['title'])));
 }
 
@@ -594,7 +594,7 @@ function aggregator_refresh($feed) {
   // Process HTTP response code.
   switch ($result->code) {
     case 304:
-      db_query('UPDATE {aggregator_feed} SET checked = %d WHERE fid = %d', time(), $feed['fid']);
+      db_query('UPDATE [{aggregator_feed}] SET [checked] = %d WHERE [fid] = %d', time(), $feed['fid']);
       drupal_set_message(t('There is no new syndicated content from %site.', array('%site' => $feed['title'])));
       break;
     case 301:
@@ -628,7 +628,7 @@ function aggregator_refresh($feed) {
 
         $etag = empty($result->headers['ETag']) ? '' : $result->headers['ETag'];
         // Update the feed data.
-        db_query("UPDATE {aggregator_feed} SET url = '%s', checked = %d, link = '%s', description = '%s', image = '%s', etag = '%s', modified = %d WHERE fid = %d", $feed['url'], time(), $channel['LINK'], $channel['DESCRIPTION'], $image, $etag, $modified, $feed['fid']);
+        db_query("UPDATE [{aggregator_feed}] SET [url] = %s, [checked] = %d, [link] = %s, [description] = %s, [image] = %s, [etag] = %s, [modified] = %d WHERE [fid] = %d", $feed['url'], time(), $channel['LINK'], $channel['DESCRIPTION'], $image, $etag, $modified, $feed['fid']);
 
         // Clear the cache.
         cache_clear_all();
@@ -785,13 +785,13 @@ function aggregator_parse_feed(&$data, $
     // we find a duplicate entry, we resolve it and pass along its ID is such
     // that we can update it if needed.
     if (!empty($guid)) {
-      $entry = db_fetch_object(db_query("SELECT iid FROM {aggregator_item} WHERE fid = %d AND guid = '%s'", $feed['fid'], $guid));
+      $entry = db_fetch_object(db_query("SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d AND [guid] = %s", $feed['fid'], $guid));
     }
     else if ($link && $link != $feed['link'] && $link != $feed['url']) {
-      $entry = db_fetch_object(db_query("SELECT iid FROM {aggregator_item} WHERE fid = %d AND link = '%s'", $feed['fid'], $link));
+      $entry = db_fetch_object(db_query("SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d AND [link] = %s", $feed['fid'], $link));
     }
     else {
-      $entry = db_fetch_object(db_query("SELECT iid FROM {aggregator_item} WHERE fid = %d AND title = '%s'", $feed['fid'], $title));
+      $entry = db_fetch_object(db_query("SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d AND [title] = %s", $feed['fid'], $title));
     }
     $item += array('AUTHOR' => '', 'DESCRIPTION' => '');
     aggregator_save_item(array('iid' => (isset($entry->iid) ? $entry->iid:  ''), 'fid' => $feed['fid'], 'timestamp' => $timestamp, 'title' => $title, 'link' => $link, 'author' => $item['AUTHOR'], 'description' => $item['DESCRIPTION'], 'guid' => $guid));
@@ -799,7 +799,7 @@ function aggregator_parse_feed(&$data, $
 
   // Remove all items that are older than flush item timer.
   $age = time() - variable_get('aggregator_clear', 9676800);
-  $result = db_query('SELECT iid FROM {aggregator_item} WHERE fid = %d AND timestamp < %d', $feed['fid'], $age);
+  $result = db_query('SELECT [iid] FROM [{aggregator_item}] WHERE [fid] = %d AND [timestamp] < %d', $feed['fid'], $age);
 
   $items = array();
   $num_rows = FALSE;
@@ -808,8 +808,8 @@ function aggregator_parse_feed(&$data, $
     $num_rows = TRUE;
   }
   if ($num_rows) {
-    db_query('DELETE FROM {aggregator_category_item} WHERE iid IN ('. implode(', ', $items) .')');
-    db_query('DELETE FROM {aggregator_item} WHERE fid = %d AND timestamp < %d', $feed['fid'], $age);
+    db_query('DELETE FROM [{aggregator_category_item}] WHERE [iid] IN ('. implode(', ', $items) .')');
+    db_query('DELETE FROM [{aggregator_item}] WHERE [fid] = %d AND [timestamp] < %d', $feed['fid'], $age);
   }
 
   return 1;
@@ -823,19 +823,18 @@ function aggregator_parse_feed(&$data, $
  */
 function aggregator_save_item($edit) {
   if ($edit['iid'] && $edit['title']) {
-    db_query("UPDATE {aggregator_item} SET title = '%s', link = '%s', author = '%s', description = '%s', guid = '%s', timestamp = %d WHERE iid = %d", $edit['title'], $edit['link'], $edit['author'], $edit['description'], $edit['guid'], $edit['timestamp'], $edit['iid']);
+    drupal_write_record("aggregator_item", $edit, 'iid');
   }
   else if ($edit['iid']) {
-    db_query('DELETE FROM {aggregator_item} WHERE iid = %d', $edit['iid']);
-    db_query('DELETE FROM {aggregator_category_item} WHERE iid = %d', $edit['iid']);
+    db_query('DELETE FROM [{aggregator_item}] WHERE [iid] = %d', $edit['iid']);
+    db_query('DELETE FROM [{aggregator_category_item}] WHERE [iid] = %d', $edit['iid']);
   }
   else if ($edit['title'] && $edit['link']) {
-    db_query("INSERT INTO {aggregator_item} (fid, title, link, author, description, timestamp, guid) VALUES (%d, '%s', '%s', '%s', '%s', %d, '%s')", $edit['fid'], $edit['title'], $edit['link'], $edit['author'], $edit['description'], $edit['timestamp'], $edit['guid']);
-    $edit['iid'] = db_last_insert_id('aggregator_item', 'iid');
+    drupal_write_record("aggregator_item", $edit);
     // file the items in the categories indicated by the feed
-    $categories = db_query('SELECT cid FROM {aggregator_category_feed} WHERE fid = %d', $edit['fid']);
+    $categories = db_query('SELECT [cid] FROM [{aggregator_category_feed}] WHERE [fid] = %d', $edit['fid']);
     while ($category = db_fetch_object($categories)) {
-      db_query('INSERT INTO {aggregator_category_item} (cid, iid) VALUES (%d, %d)', $category->cid, $edit['iid']);
+      db_query('INSERT INTO [{aggregator_category_item}] ([cid], [iid]) VALUES (%d, %d)', $category->cid, $edit['iid']);
     }
   }
 }
@@ -851,7 +850,7 @@ function aggregator_save_item($edit) {
 function aggregator_feed_load($fid) {
   static $feeds;
   if (!isset($feeds[$fid])) {
-    $feeds[$fid] = db_fetch_array(db_query('SELECT * FROM {aggregator_feed} WHERE fid = %d', $fid));
+    $feeds[$fid] = db_fetch_array(db_query('SELECT * FROM [{aggregator_feed}] WHERE [fid] = %d', $fid));
   }
   return $feeds[$fid];
 }
@@ -867,7 +866,7 @@ function aggregator_feed_load($fid) {
 function aggregator_category_load($cid) {
   static $categories;
   if (!isset($categories[$cid])) {
-    $categories[$cid] = db_fetch_array(db_query('SELECT * FROM {aggregator_category} WHERE cid = %d', $cid));
+    $categories[$cid] = db_fetch_array(db_query('SELECT * FROM [{aggregator_category}] WHERE [cid] = %d', $cid));
   }
   return $categories[$cid];
 }
Index: modules/aggregator/aggregator.pages.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/aggregator/aggregator.pages.inc,v
retrieving revision 1.12
diff -u -p -r1.12 aggregator.pages.inc
--- modules/aggregator/aggregator.pages.inc	8 Jan 2008 10:35:40 -0000	1.12
+++ modules/aggregator/aggregator.pages.inc	3 Apr 2008 07:55:02 -0000
@@ -15,7 +15,7 @@
 function aggregator_page_last() {
   drupal_add_feed(url('aggregator/rss'), variable_get('site_name', 'Drupal') .' '. t('aggregator'));
 
-  $items = aggregator_feed_items_load('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_item} i INNER JOIN {aggregator_feed} f ON i.fid = f.fid ORDER BY i.timestamp DESC, i.iid DESC');
+  $items = aggregator_feed_items_load('SELECT i.*, f.[title] AS [ftitle], f.[link] AS [flink] FROM [{aggregator_item}] i INNER JOIN [{aggregator_feed}] f ON i.[fid] = f.[fid] ORDER BY i.[timestamp] DESC, i.[iid] DESC');
 
   return _aggregator_page_list($items, arg(1));
 }
@@ -42,7 +42,7 @@ function aggregator_page_source($arg1, $
 
   // It is safe to include the fid in the query because it's loaded from the
   // database by aggregator_feed_load.
-  $items = aggregator_feed_items_load('SELECT * FROM {aggregator_item} WHERE fid = '. $feed->fid .' ORDER BY timestamp DESC, iid DESC');
+  $items = aggregator_feed_items_load('SELECT * FROM [{aggregator_item}] WHERE [fid] = '. $feed->fid .' ORDER BY [timestamp] DESC, [iid] DESC');
 
   return _aggregator_page_list($items, arg(3), $feed_source);
 }
@@ -69,7 +69,7 @@ function aggregator_page_category($arg1,
 
   // It is safe to include the cid in the query because it's loaded from the
   // database by aggregator_category_load.
-  $items = aggregator_feed_items_load('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_category_item} c LEFT JOIN {aggregator_item} i ON c.iid = i.iid LEFT JOIN {aggregator_feed} f ON i.fid = f.fid WHERE cid = '. $category['cid'] .' ORDER BY timestamp DESC, i.iid DESC');
+  $items = aggregator_feed_items_load('SELECT i.*, f.[title] AS [ftitle], f.[link] AS [flink] FROM [{aggregator_category_item}] c LEFT JOIN [{aggregator_item}] i ON c.[iid] = i.[iid] LEFT JOIN [{aggregator_feed}] f ON i.[fid] = f.[fid] WHERE [cid] = '. $category['cid'] .' ORDER BY [timestamp] DESC, i.[iid] DESC');
 
   return _aggregator_page_list($items, arg(3));
 }
@@ -87,7 +87,7 @@ function aggregator_feed_items_load($sql
   if (isset($sql)) {
     $result = pager_query($sql, 20);
     while ($item = db_fetch_object($result)) {
-      $result_category = db_query('SELECT c.title, c.cid FROM {aggregator_category_item} ci LEFT JOIN {aggregator_category} c ON ci.cid = c.cid WHERE ci.iid = %d ORDER BY c.title', $item->iid);
+      $result_category = db_query('SELECT c.[title], c.[cid] FROM [{aggregator_category_item}] ci LEFT JOIN [{aggregator_category}] c ON ci.[cid] = c.[cid] WHERE ci.[iid] = %d ORDER BY c.[title]', $item->iid);
       $item->categories = array();
       while ($item_categories = db_fetch_object($result_category)) {
         $item->categories[] = $item_categories;
@@ -153,7 +153,7 @@ function aggregator_categorize_items($it
   foreach ($items as $item) {
     $form['items'][$item->iid] = array('#value' => theme('aggregator_item', $item));
     $form['categories'][$item->iid] = array();
-    $categories_result = db_query('SELECT c.cid, c.title, ci.iid FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid AND ci.iid = %d', $item->iid);
+    $categories_result = db_query('SELECT c.[cid], c.[title], ci.[iid] FROM [{aggregator_category}] c LEFT JOIN [{aggregator_category_item}] ci ON c.[cid] = ci.[cid] AND ci.[iid] = %d', $item->iid);
     $selected = array();
     while ($category = db_fetch_object($categories_result)) {
       if (!$done) {
@@ -192,10 +192,10 @@ function aggregator_categorize_items_val
 function aggregator_categorize_items_submit($form, &$form_state) {
   if (!empty($form_state['values']['categories'])) {
     foreach ($form_state['values']['categories'] as $iid => $selection) {
-      db_query('DELETE FROM {aggregator_category_item} WHERE iid = %d', $iid);
+      db_query('DELETE FROM [{aggregator_category_item}] WHERE [iid] = %d', $iid);
       foreach ($selection as $cid) {
         if ($cid) {
-          db_query('INSERT INTO {aggregator_category_item} (cid, iid) VALUES (%d, %d)', $cid, $iid);
+          db_query('INSERT INTO [{aggregator_category_item}] ([cid], [iid]) VALUES (%d, %d)', $cid, $iid);
         }
       }
     }
@@ -250,7 +250,7 @@ function template_preprocess_aggregator_
 
   $variables['feed_url'] = check_url($item->link);
   $variables['feed_title'] = check_plain($item->title);
-  $variables['content'] = aggregator_filter_xss($item->description);
+  $variables['content'] = aggregator_filter_xss(db_decode_blob($item->description));
 
   $variables['source_url'] = '';
   $variables['source_title'] = '';
@@ -275,14 +275,14 @@ function template_preprocess_aggregator_
  * Menu callback; displays all the feeds used by the aggregator.
  */
 function aggregator_page_sources() {
-  $result = db_query('SELECT f.fid, f.title, f.description, f.image, MAX(i.timestamp) AS last FROM {aggregator_feed} f LEFT JOIN {aggregator_item} i ON f.fid = i.fid GROUP BY f.fid, f.title, f.description, f.image ORDER BY last DESC, f.title');
+  $result = db_query('SELECT f.[fid], f.[title], f.[description], f.[image], MAX(i.[timestamp]) AS [last] FROM [{aggregator_feed}] f LEFT JOIN [{aggregator_item}] i ON f.[fid] = i.[fid] GROUP BY f.[fid], f.[title], f.[description], f.[image] ORDER BY [last] DESC, f.[title]');
 
   $output = '';
   while ($feed = db_fetch_object($result)) {
     // Most recent items:
     $summary_items = array();
     if (variable_get('aggregator_summary_items', 3)) {
-      $items = db_query_range('SELECT i.title, i.timestamp, i.link FROM {aggregator_item} i WHERE i.fid = %d ORDER BY i.timestamp DESC', $feed->fid, 0, variable_get('aggregator_summary_items', 3));
+      $items = db_query_range('SELECT i.[title], i.[timestamp], i.[link] FROM [{aggregator_item}] i WHERE i.[fid] = %d ORDER BY i.[timestamp] DESC', $feed->fid, 0, variable_get('aggregator_summary_items', 3));
       while ($item = db_fetch_object($items)) {
         $summary_items[] = theme('aggregator_summary_item', $item);
       }
@@ -299,13 +299,13 @@ function aggregator_page_sources() {
  * Menu callback; displays all the categories used by the aggregator.
  */
 function aggregator_page_categories() {
-  $result = db_query('SELECT c.cid, c.title, c.description FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid LEFT JOIN {aggregator_item} i ON ci.iid = i.iid GROUP BY c.cid, c.title, c.description');
+  $result = db_query('SELECT c.[cid], c.[title], c.[description] FROM [{aggregator_category}] c LEFT JOIN [{aggregator_category_item}] ci ON c.[cid] = ci.[cid] LEFT JOIN [{aggregator_item}] i ON ci.[iid] = i.[iid] GROUP BY c.[cid], c.[title], c.[description]');
 
   $output = '';
   while ($category = db_fetch_object($result)) {
     if (variable_get('aggregator_summary_items', 3)) {
       $summary_items = array();
-      $items = db_query_range('SELECT i.title, i.timestamp, i.link, f.title as feed_title, f.link as feed_link FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON i.iid = ci.iid LEFT JOIN {aggregator_feed} f ON i.fid = f.fid WHERE ci.cid = %d ORDER BY i.timestamp DESC', $category->cid, 0, variable_get('aggregator_summary_items', 3));
+      $items = db_query_range('SELECT i.[title], i.[timestamp], i.[link], f.[title] AS [feed_title], f.[link] AS [feed_link] FROM [{aggregator_category_item}] ci LEFT JOIN [{aggregator_item}] i ON i.[iid] = ci.[iid] LEFT JOIN [{aggregator_feed}] f ON i.[fid] = f.[fid] WHERE ci.[cid] = %d ORDER BY i.[timestamp] DESC', $category->cid, 0, variable_get('aggregator_summary_items', 3));
       while ($item = db_fetch_object($items)) {
         $summary_items[] = theme('aggregator_summary_item', $item);
       }
@@ -324,14 +324,14 @@ function aggregator_page_rss() {
   $result = NULL;
   // arg(2) is the passed cid, only select for that category
   if (arg(2)) {
-    $category = db_fetch_object(db_query('SELECT cid, title FROM {aggregator_category} WHERE cid = %d', arg(2)));
-    $sql = 'SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_category_item} c LEFT JOIN {aggregator_item} i ON c.iid = i.iid LEFT JOIN {aggregator_feed} f ON i.fid = f.fid WHERE cid = %d ORDER BY timestamp DESC, i.iid DESC';
+    $category = db_fetch_object(db_query('SELECT [cid], [title] FROM [{aggregator_category}] WHERE [cid] = %d', arg(2)));
+    $sql = 'SELECT i.*, f.[title] AS [ftitle], f.[link] AS [flink] FROM [{aggregator_category_item}] c LEFT JOIN [{aggregator_item}] i ON c.[iid] = i.[iid] LEFT JOIN [{aggregator_feed}] f ON i.[fid] = f.[fid] WHERE [cid] = %d ORDER BY [timestamp] DESC, i.[iid] DESC';
     $result = db_query_range($sql, $category->cid, 0, variable_get('feed_default_items', 10));
   }
   // or, get the default aggregator items
   else {
     $category = NULL;
-    $sql = 'SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_item} i INNER JOIN {aggregator_feed} f ON i.fid = f.fid ORDER BY i.timestamp DESC, i.iid DESC';
+    $sql = 'SELECT i.*, f.[title] AS [ftitle], f.[link] AS [flink] FROM [{aggregator_item}] i INNER JOIN [{aggregator_feed}] f ON i.[fid] = f.[fid] ORDER BY i.[timestamp] DESC, i.[iid] DESC';
     $result = db_query_range($sql, 0, variable_get('feed_default_items', 10));
   }
 
@@ -357,6 +357,7 @@ function theme_aggregator_page_rss($feed
   $items = '';
   $feed_length = variable_get('feed_item_length', 'teaser');
   foreach ($feeds as $feed) {
+    $feed->description = db_decode_blob($feed->description);
     switch ($feed_length) {
       case 'teaser':
         $teaser = node_teaser($feed->description);
@@ -394,10 +395,10 @@ function theme_aggregator_page_rss($feed
  */
 function aggregator_page_opml($cid = NULL) {
   if ($cid) {
-    $result = db_query('SELECT f.title, f.url FROM {aggregator_feed} f LEFT JOIN {aggregator_category_feed} c on f.fid = c.fid WHERE c.cid = %d ORDER BY title', $cid);
+    $result = db_query('SELECT f.[title], f.[url] FROM [{aggregator_feed}] f LEFT JOIN [{aggregator_category_feed}] c on f.[fid] = c.[fid] WHERE c.[cid] = %d ORDER BY [title]', $cid);
   }
   else {
-    $result = db_query('SELECT * FROM {aggregator_feed} ORDER BY title');
+    $result = db_query('SELECT * FROM [{aggregator_feed}] ORDER BY [title]');
   }
 
   $feeds = array();
Index: modules/block/block.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.admin.inc,v
retrieving revision 1.14.2.1
diff -u -p -r1.14.2.1 block.admin.inc
--- modules/block/block.admin.inc	27 Feb 2008 12:07:42 -0000	1.14.2.1
+++ modules/block/block.admin.inc	3 Apr 2008 07:55:02 -0000
@@ -95,7 +95,7 @@ function block_admin_display_form_submit
   foreach ($form_state['values'] as $block) {
     $block['status'] = $block['region'] != BLOCK_REGION_NONE;
     $block['region'] = $block['status'] ? $block['region'] : '';
-    db_query("UPDATE {blocks} SET status = %d, weight = %d, region = '%s', throttle = %d WHERE module = '%s' AND delta = '%s' AND theme = '%s'", $block['status'], $block['weight'], $block['region'], isset($block['throttle']) ? $block['throttle'] : 0, $block['module'], $block['delta'], $block['theme']);
+    db_query("UPDATE [{blocks}] SET [status] = %d, [weight] = %d, [region] = %s, [throttle] = %d WHERE [module] = %s AND [delta] = %s AND [theme] = %s", $block['status'], $block['weight'], $block['region'], isset($block['throttle']) ? $block['throttle'] : 0, $block['module'], $block['delta'], $block['theme']);
   }
   drupal_set_message(t('The block settings have been updated.'));
   cache_clear_all();
@@ -143,7 +143,7 @@ function block_admin_configure(&$form_st
   $form['module'] = array('#type' => 'value', '#value' => $module);
   $form['delta'] = array('#type' => 'value', '#value' => $delta);
 
-  $edit = db_fetch_array(db_query("SELECT pages, visibility, custom, title FROM {blocks} WHERE module = '%s' AND delta = '%s'", $module, $delta));
+  $edit = db_fetch_array(db_query("SELECT [pages], [visibility], [custom], [title] FROM [{blocks}] WHERE [module] = %s AND [delta] = %s", $module, $delta));
 
   $form['block_settings'] = array(
     '#type' => 'fieldset',
@@ -193,11 +193,11 @@ function block_admin_configure(&$form_st
 
   // Role-based visibility settings
   $default_role_options = array();
-  $result = db_query("SELECT rid FROM {blocks_roles} WHERE module = '%s' AND delta = '%s'", $module, $delta);
+  $result = db_query("SELECT [rid] FROM [{blocks_roles}] WHERE [module] = %s AND [delta] = %s", $module, $delta);
   while ($role = db_fetch_object($result)) {
     $default_role_options[] = $role->rid;
   }
-  $result = db_query('SELECT rid, name FROM {role} ORDER BY name');
+  $result = db_query('SELECT [rid], [name] FROM [{role}] ORDER BY [name]');
   $role_options = array();
   while ($role = db_fetch_object($result)) {
     $role_options[$role->rid] = $role->name;
@@ -259,7 +259,7 @@ function block_admin_configure(&$form_st
 
 function block_admin_configure_validate($form, &$form_state) {
   if ($form_state['values']['module'] == 'block') {
-    if (empty($form_state['values']['info']) || db_result(db_query("SELECT COUNT(*) FROM {boxes} WHERE bid != %d AND info = '%s'", $form_state['values']['delta'], $form_state['values']['info']))) {
+    if (empty($form_state['values']['info']) || db_result(db_query("SELECT COUNT(*) FROM [{boxes}] WHERE [bid] <> %d AND [info] = %s", $form_state['values']['delta'], $form_state['values']['info']))) {
       form_set_error('info', t('Please ensure that each block description is unique.'));
     }
   }
@@ -267,10 +267,10 @@ function block_admin_configure_validate(
 
 function block_admin_configure_submit($form, &$form_state) {
   if (!form_get_errors()) {
-    db_query("UPDATE {blocks} SET visibility = %d, pages = '%s', custom = %d, title = '%s' WHERE module = '%s' AND delta = '%s'", $form_state['values']['visibility'], trim($form_state['values']['pages']), $form_state['values']['custom'], $form_state['values']['title'], $form_state['values']['module'], $form_state['values']['delta']);
-    db_query("DELETE FROM {blocks_roles} WHERE module = '%s' AND delta = '%s'", $form_state['values']['module'], $form_state['values']['delta']);
+    db_query("UPDATE [{blocks}] SET [visibility] = %d, [pages] = %s, [custom] = %d, [title] = %s WHERE [module] = %s AND [delta] = %s", $form_state['values']['visibility'], trim($form_state['values']['pages']), $form_state['values']['custom'], $form_state['values']['title'], $form_state['values']['module'], $form_state['values']['delta']);
+    db_query("DELETE FROM [{blocks_roles}] WHERE [module] = %s AND [delta] = %s", $form_state['values']['module'], $form_state['values']['delta']);
     foreach (array_filter($form_state['values']['roles']) as $rid) {
-      db_query("INSERT INTO {blocks_roles} (rid, module, delta) VALUES (%d, '%s', '%s')", $rid, $form_state['values']['module'], $form_state['values']['delta']);
+      db_query("INSERT INTO [{blocks_roles}] ([rid], [module], [delta]) VALUES (%d, %s, %s)", $rid, $form_state['values']['module'], $form_state['values']['delta']);
     }
     module_invoke($form_state['values']['module'], 'block', 'save', $form_state['values']['delta'], $form_state['values']);
     drupal_set_message(t('The block configuration has been saved.'));
@@ -288,7 +288,7 @@ function block_add_block_form(&$form_sta
 }
 
 function block_add_block_form_validate($form, &$form_state) {
-  if (empty($form_state['values']['info']) || db_result(db_query("SELECT COUNT(*) FROM {boxes} WHERE info = '%s'", $form_state['values']['info']))) {
+  if (empty($form_state['values']['info']) || db_result(db_query("SELECT COUNT(*) FROM [{boxes}] WHERE [info] = %s", $form_state['values']['info']))) {
     form_set_error('info', t('Please ensure that each block description is unique.'));
   }
 }
@@ -297,17 +297,17 @@ function block_add_block_form_validate($
  * Save the new custom block.
  */
 function block_add_block_form_submit($form, &$form_state) {
-  db_query("INSERT INTO {boxes} (body, info, format) VALUES ('%s', '%s', %d)", $form_state['values']['body'], $form_state['values']['info'], $form_state['values']['format']);
-  $delta = db_last_insert_id('boxes', 'bid');
+  drupal_write_record('boxes', $form_state['values']);
+  $delta = $form_state['values']['bid'];
 
   foreach (list_themes() as $key => $theme) {
     if ($theme->status) {
-      db_query("INSERT INTO {blocks} (visibility, pages, custom, title, module, theme, status, weight, delta, cache) VALUES(%d, '%s', %d, '%s', '%s', '%s', %d, %d, %d, %d)", $form_state['values']['visibility'], trim($form_state['values']['pages']), $form_state['values']['custom'], $form_state['values']['title'], $form_state['values']['module'], $theme->name, 0, 0, $delta, BLOCK_NO_CACHE);
+      db_query("INSERT INTO [{blocks}] ([visibility], [pages], [custom], [title], [module], [theme], [status], [weight], [delta], [cache]) VALUES(%d, %s, %d, %s, %s, %s, %d, %d, %d, %d)", $form_state['values']['visibility'], trim($form_state['values']['pages']), $form_state['values']['custom'], $form_state['values']['title'], $form_state['values']['module'], $theme->name, 0, 0, $delta, BLOCK_NO_CACHE);
     }
   }
 
   foreach (array_filter($form_state['values']['roles']) as $rid) {
-    db_query("INSERT INTO {blocks_roles} (rid, module, delta) VALUES (%d, '%s', '%s')", $rid, $form_state['values']['module'], $delta);
+    db_query("INSERT INTO [{blocks_roles}] ([rid], [module], [delta]) VALUES (%d, %s, %s)", $rid, $form_state['values']['module'], $delta);
   }
 
   drupal_set_message(t('The block has been created.'));
@@ -332,8 +332,8 @@ function block_box_delete(&$form_state, 
  * Deletion of custom blocks.
  */
 function block_box_delete_submit($form, &$form_state) {
-  db_query('DELETE FROM {boxes} WHERE bid = %d', $form_state['values']['bid']);
-  db_query("DELETE FROM {blocks} WHERE module = 'block' AND delta = %d", $form_state['values']['bid']);
+  db_query('DELETE FROM [{boxes}] WHERE [bid] = %d', $form_state['values']['bid']);
+  db_query("DELETE FROM [{blocks}] WHERE [module] = 'block' AND [delta] = %d", $form_state['values']['bid']);
   drupal_set_message(t('The block %name has been removed.', array('%name' => $form_state['values']['info'])));
   cache_clear_all();
   $form_state['redirect'] = 'admin/build/block';
Index: modules/block/block.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.install,v
retrieving revision 1.8
diff -u -p -r1.8 block.install
--- modules/block/block.install	18 Dec 2007 12:59:20 -0000	1.8
+++ modules/block/block.install	3 Apr 2008 07:55:02 -0000
@@ -79,6 +79,7 @@ function block_schema() {
       'pages' => array(
         'type' => 'text',
         'not null' => TRUE,
+        'default' => '',
         'description' => t('Contents of the "Pages" block; contains either a list of paths on which to include/exclude the block or PHP code, depending on "visibility" setting.'),
       ),
       'title' => array(
@@ -112,18 +113,21 @@ function block_schema() {
         'type' => 'varchar',
         'length' => 64,
         'not null' => TRUE,
+        'default' => '',
         'description' => t("The block's origin module, from {blocks}.module."),
       ),
       'delta'  => array(
         'type' => 'varchar',
         'length' => 32,
         'not null' => TRUE,
+        'default' => '',
         'description' => t("The block's unique delta within module, from {blocks}.delta."),
       ),
       'rid' => array(
         'type' => 'int',
         'unsigned' => TRUE,
         'not null' => TRUE,
+        'default' => 0,
         'description' => t("The user's role ID from {users_roles}.rid."),
       ),
     ),
@@ -147,7 +151,7 @@ function block_schema() {
         'description' => t("The block's {blocks}.bid."),
       ),
       'body' => array(
-        'type' => 'text',
+        'type' => 'blob',
         'not null' => FALSE,
         'size' => 'big',
         'description' => t('Block contents.'),
Index: modules/block/block.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/block/block.module,v
retrieving revision 1.299
diff -u -p -r1.299 block.module
--- modules/block/block.module	3 Feb 2008 19:12:57 -0000	1.299
+++ modules/block/block.module	3 Apr 2008 07:55:02 -0000
@@ -188,7 +188,7 @@ function block_block($op = 'list', $delt
     case 'list':
       $blocks = array();
 
-      $result = db_query('SELECT bid, info FROM {boxes} ORDER BY info');
+      $result = db_query('SELECT [bid], [info] FROM [{boxes}] ORDER BY [info]');
       while ($block = db_fetch_object($result)) {
         $blocks[$block->bid]['info'] = $block->info;
         // Not worth caching.
@@ -211,8 +211,8 @@ function block_block($op = 'list', $delt
       break;
 
     case 'view':
-      $block = db_fetch_object(db_query('SELECT body, format FROM {boxes} WHERE bid = %d', $delta));
-      $data['content'] = check_markup($block->body, $block->format, FALSE);
+      $block = db_fetch_object(db_query('SELECT [body], [format] FROM [{boxes}] WHERE [bid] = %d', $delta));
+      $data['content'] = check_markup(db_decode_blob($block->body), $block->format, FALSE);
       return $data;
   }
 }
@@ -228,7 +228,7 @@ function _block_rehash() {
 
   init_theme();
 
-  $result = db_query("SELECT * FROM {blocks} WHERE theme = '%s'", $theme_key);
+  $result = db_query("SELECT * FROM [{blocks}] WHERE [theme] = %s", $theme_key);
   $old_blocks = array();
   while ($old_block = db_fetch_array($result)) {
     $old_blocks[$old_block['module']][$old_block['delta']] = $old_block;
@@ -248,7 +248,7 @@ function _block_rehash() {
           $block['delta']  = $delta;
           $block['theme']  = $theme_key;
           if (!isset($block['pages'])) {
-            // {block}.pages is type 'text', so it cannot have a
+            // [{block}].[pages] is type 'text', so it cannot have a
             // default value, and not null, so we need to provide
             // value if the module did not.
             $block['pages']  = '';
@@ -288,14 +288,14 @@ function _block_rehash() {
   // Remove blocks that are no longer defined by the code from the database.
   foreach ($old_blocks as $module => $old_module_blocks) {
     foreach ($old_module_blocks as $delta => $block) {
-      db_query("DELETE FROM {blocks} WHERE module = '%s' AND delta = '%s' AND theme = '%s'", $module, $delta, $theme_key);
+      db_query("DELETE FROM [{blocks}] WHERE [module] = %s AND [delta] = %s AND [theme] = %s", $module, $delta, $theme_key);
     }
   }
   return $blocks;
 }
 
 function block_box_get($bid) {
-  return db_fetch_array(db_query("SELECT bx.*, bl.title FROM {boxes} bx INNER JOIN {blocks} bl ON bx.bid = bl.delta WHERE bl.module = 'block' AND bx.bid = %d", $bid));
+  return db_fetch_array(db_query("SELECT bx.*, bl.[title] FROM [{boxes}] bx INNER JOIN [{blocks}] bl ON bx.[bid] = bl.[delta] WHERE bl.[module] = 'block' AND bx.[bid] = %d", $bid));
 }
 
 /**
@@ -319,7 +319,7 @@ function block_box_form($edit = array())
   $form['body_field']['body'] = array(
     '#type' => 'textarea',
     '#title' => t('Block body'),
-    '#default_value' => $edit['body'],
+    '#default_value' => db_decode_blob($edit['body']),
     '#rows' => 15,
     '#description' => t('The content of the block as shown to the user.'),
     '#weight' => -17,
@@ -337,7 +337,8 @@ function block_box_save($edit, $delta) {
     $edit['format'] = FILTER_FORMAT_DEFAULT;
   }
 
-  db_query("UPDATE {boxes} SET body = '%s', info = '%s', format = %d WHERE bid = %d", $edit['body'], $edit['info'], $edit['format'], $delta);
+  $edit['bid'] = $delta;
+  drupal_write_record('boxes', $edit, 'bid');
 
   return TRUE;
 }
@@ -353,7 +354,7 @@ function block_user($type, $edit, &$acco
     case 'form':
       if ($category == 'account') {
         $rids = array_keys($account->roles);
-        $result = db_query("SELECT DISTINCT b.* FROM {blocks} b LEFT JOIN {blocks_roles} r ON b.module = r.module AND b.delta = r.delta WHERE b.status = 1 AND b.custom != 0 AND (r.rid IN (". db_placeholders($rids) .") OR r.rid IS NULL) ORDER BY b.weight, b.module", $rids);
+        $result = db_query("SELECT DISTINCT b.* FROM [{blocks}] b LEFT JOIN [{blocks_roles}] r ON b.[module] = r.[module] AND b.[delta] = r.[delta] WHERE b.[status] = 1 AND b.[custom] <> 0 AND (r.[rid] IN (". db_placeholders($rids) .") OR r.[rid] IS NULL) ORDER BY b.[weight], b.[module]", $rids);
         $form['block'] = array('#type' => 'fieldset', '#title' => t('Block configuration'), '#weight' => 3, '#collapsible' => TRUE, '#tree' => TRUE);
         while ($block = db_fetch_object($result)) {
           $data = module_invoke($block->module, 'block', 'list');
@@ -400,7 +401,7 @@ function block_list($region) {
 
   if (!count($blocks)) {
     $rids = array_keys($user->roles);
-    $result = db_query(db_rewrite_sql("SELECT DISTINCT b.* FROM {blocks} b LEFT JOIN {blocks_roles} r ON b.module = r.module AND b.delta = r.delta WHERE b.theme = '%s' AND b.status = 1 AND (r.rid IN (". db_placeholders($rids) .") OR r.rid IS NULL) ORDER BY b.region, b.weight, b.module", 'b', 'bid'), array_merge(array($theme_key), $rids));
+    $result = db_query(db_rewrite_sql("SELECT DISTINCT b.* FROM [{blocks}] b LEFT JOIN [{blocks_roles}] r ON b.[module] = r.[module] AND b.[delta] = r.[delta] WHERE b.[theme] = %s AND b.[status] = 1 AND (r.[rid] IN (". db_placeholders($rids) .") OR r.[rid] IS NULL) ORDER BY b.[region], b.[weight], b.[module]", 'b', 'bid'), array_merge(array($theme_key), $rids));
     while ($block = db_fetch_object($result)) {
       if (!isset($blocks[$block->region])) {
         $blocks[$block->region] = array();
Index: modules/blog/blog.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/blog/blog.module,v
retrieving revision 1.297
diff -u -p -r1.297 blog.module
--- modules/blog/blog.module	9 Jan 2008 09:51:34 -0000	1.297
+++ modules/blog/blog.module	3 Apr 2008 07:55:02 -0000
@@ -32,7 +32,7 @@ function blog_perm() {
