- Patch #337926 by hswong3i: by default, force lower-case database tables/columns.

includes/database/mysql/database.inc

@@ -29,6 +29,8 @@ public function __construct(Array $connection_options = array()) {
       PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => TRUE,
       // Because MySQL's prepared statements skip the query cache, because it's dumb.
       PDO::ATTR_EMULATE_PREPARES => TRUE,
+      // Force column names to lower case.
+      PDO::ATTR_CASE => PDO::CASE_LOWER,
     ));
 
     // Force MySQL to use the UTF-8 character set by default.

includes/database/pgsql/database.inc

@@ -30,6 +30,8 @@ public function __construct(Array $connection_options = array()) {
     parent::__construct($dsn, $connection_options['username'], $connection_options['password'], array(
       // Convert numeric values to strings when fetching.
       PDO::ATTR_STRINGIFY_FETCHES => TRUE,
+      // Force column names to lower case.
+      PDO::ATTR_CASE => PDO::CASE_LOWER,
     ));
   }
 

includes/database/sqlite/database.inc

@@ -31,7 +31,10 @@ public function __construct(Array $connection_options = array()) {
 
     $this->transactionSupport = isset($connection_options['transactions']) ? $connection_options['transactions'] : TRUE;
 
-    parent::__construct('sqlite:'. $connection_options['database'], '', '', $connection_options);
+    parent::__construct('sqlite:'. $connection_options['database'], '', '', array(
+      // Force column names to lower case.
+      PDO::ATTR_CASE => PDO::CASE_LOWER,
+    ));
 
     $this->exec('PRAGMA encoding="UTF-8"');