--- database.mysql.inc.old	2006-05-16 18:27:07.093750000 +0200
+++ database.mysql.inc	2006-05-16 20:40:04.000000000 +0200
@@ -364,7 +364,268 @@ function db_unlock_tables() {
 }
 
 /**
- * @} End of "ingroup database".
+* Get drupal datatypes.
+* 
+* @return 
+*   Array containing all valid drupal datatypes with their default properties
+*/
+function db_get_types() {
+  $types = array (
+    'string' => array('type' => 'VARCHAR', 'length' => 255),
+    'text' => array('type' => 'TEXT'),
+    'long text' => array('type' => 'LONGTEXT'),
+    'timestamp' => array('type' => 'INT', 'length' => 11, 'NULL' => FALSE, 'unsigned' => TRUE, 'default' => 0),
+    'int' => array('type' => 'INT', 'length' => 10),
+    'medium int' => array('type' => 'MEDIUMINT', 'length' => 9),
+    'tiny int' => array('type' => 'TINYINT', 'length' => 4),
+    'blob' => array('type' => 'BLOB'),
+    'long blob' => array('type' => 'LONGBLOB'),
+    'boolean' => array('type' => 'TINYINT', 'length' => 1, 'NULL' => 'FALSE', 'default' => 0)
+  );
+  return $types;
+} 
+
+/**
+* Create a new table.
+* 
+* @param string $table 
+*   Name of the table to be created.
+* @param array $columns 
+*   Is an associative array with 'name' => 'type',
+*     'name'  should be a string containing the name of the column,
+*     'type'  can either be a string (containing a drupal datatype, the default properties will be used) or
+*             an associative array (to specify more properties).
+* 
+*     If the latter is used, all default properties specified in the drupal datatype array can be overriden
+*     by setting the following keys in the 'type'-array:
+* 
+*       'type' - The drupal datatype [required].
+*       'length' - For varchar or numeric types [optional]
+*       'NULL' - FALSE for NOT NULL, TRUE for NULL [optional]
+*       'unsigned' - TRUE for UNSIGNED [optional]
+*       'auto_increment' - TRUE for 'auto_increment' [optional]
+*       'default' - Default value for the column [optional].
+*       'key' - [optional]
+*         'primary' to make the column the primary key,
+*         'unique' for unique key or
+*         use any other string $string to create a new key $string. All columns that have type['key'] = $string will be part of it.
+*/
+function db_create_table($table, $columns) {
+  $query = "CREATE TABLE IF NOT EXISTS `" . db_escape_table($table) . "` (";
+  
+  $typedefs = db_get_types();
+  
+  foreach ($columns as $name => $type) {
+    if (is_string($type))
+      $type = array('type' => $type);
+    
+    $datatype = $type['type'];
+    $type['type'] = $typedefs[$datatype]['type'];
+    
+    // Get default properties for unset keys.
+    foreach ($typedefs[$datatype] as $key => $value) {
+      if (!isset($type[$key]))
+        $type[$key] = $value;
+    } 
+    
+    $query .= "`" . $name . "` " . $type['type'];
+    
+    if (isset($type['length']))
+      $query .= "(" . $type['length'] . ") ";
+    
+    if (!empty($type['unsigned'])) 
+      $query .= " unsigned ";
+    
+    // Isset check to provide the ability to override 'NOT NULL' from a drupal datatype with 'NULL' for specific query.
+    if (isset($type['NULL'])) {
+      if (!$type['NULL'])
+        $query .= " NOT NULL ";
+    }
+    
+    if (!empty($type['auto_increment'])) 
+      $query .= " auto_increment ";
+    
+    if (isset($type['default']))
+      $query .= " DEFAULT '" . $type['default'] . "'";
+    
+    if (isset($type['key'])) {
+      switch ($type['key']) {
+        case 'primary':
+          $primarykey = $name;
+          break;
+        case 'unique':
+          $uniquekeys[] = $name;
+          break;
+        default:
+          $keys[$type['key']][] = $name;
+          break;
+        } 
+    } 
+    
+    $query .= ", ";
+  } 
+  
+  if (isset($primarykey))
+    $query .= " PRIMARY KEY (" . $primarykey . "), ";
+  
+  if (isset($uniquekeys)) {
+    foreach($uniquekeys as $current)
+      $query .= " UNIQUE KEY (" . $current . "), ";
+  } 
+  
+  // Add keys.
+  if (isset($keys)) {
+    foreach($keys as $name => $columns) {
+      $query .= " KEY " . $name . " (";
+      foreach ($columns as $current)
+        $query .= $current . ", ";
+      $query = substr($query, 0, strlen($query) - 2);
+      $query .= "), ";
+    } 
+  } 
+  
+  $query = substr($query, 0, strlen($query) - 2);
+  $query .= ");";
+  
+  return db_query($query);
+} 
+
+/**
+* Drop table.
+* 
+* @param string $table 
+*   The table to be dropped.
+*/
+function db_drop_table($table) {
+  return db_query('DROP TABLE IF EXISTS ' . db_escape_table($table));
+} 
+
+/**
+* Create index.
+* 
+* @param  $table 
+*   The table to be altered.
+* @param  $name 
+*   The index's name.
+* @param  $columns 
+*   Is an array of column names, or just a string with a single column name.
+*/
+function db_create_index($table, $name, $columns) {
+  $query = 'ALTER TABLE ' . db_escape_table($table);
+  
+  if (is_array($columns)) {
+    $query .= ' ADD INDEX ' . $name . ' (';
+    foreach ($columns as $current)
+      $query .= $current . ', ';
+    $query = substr($query, 0, strlen($query) - 2);
+    $query .= ')';
+  } 
+  
+  if (is_string($columns))
+    $query .= ' ADD INDEX ' . $name . ' (' . $columns . ')';
+  
+  return db_query($query);
+} 
+
+/**
+* Drop index.
+* 
+* @param string $table 
+*   The table to be altered.
+* @param string $name 
+*   Name of the index to be dropped.
+*/
+function db_drop_index($table, $name) {
+  return db_query('ALTER TABLE ' . db_escape_table($table) . ' DROP INDEX ' . $name);
+} 
+
+/**
+* Adds a new column to a table.
+* 
+* @param string $table 
+*   Name of the table to be altered.
+* @param string $column 
+*   Name of the column to be added.
+* @param mixed $type 
+*   Can either be a string (containing a datatype, the default properties will be used) or
+*   an associative array (to specify more properties).
+* 
+*   If the latter is used, all default properties specified in the drupal datatype array can be overriden
+*   by setting the following keys in the 'type'-array:
+* 
+*     'type' - the datatype [required].
+*     'length' [optional]
+*     'NULL' - FALSE for NOT NULL, TRUE for NULL [optional]
+*     'unsigned' - TRUE for UNSIGNED [optional]
+*     'auto_increment' - TRUE for 'auto_increment' [optional]
+*     'default' - default value for the column [optional].
+*/
+function db_add_column($table, $column, $type) {
+  $query = 'ALTER TABLE ' . db_escape_table($table) . ' ADD ' . $column . ' ';
+  
+  $typedefs = db_get_types();
+  
+  if (is_string($type))
+    $type = array('type' => $type);
+  
+  $datatype = $type['type'];
+  $type['type'] = $typedefs[$datatype]['type'];
+  
+  foreach ($typedefs[$datatype] as $key => $value) {
+    if (!isset($type[$key]))
+      $type[$key] = $value;
+  } 
+  
+  $query .= $type['type'];
+  
+  if (isset($type['length']))
+    $query .= "(" . $type['length'] . ") ";
+  
+  if (!empty($type['unsigned'])) 
+    $query .= " unsigned ";
+    
+  // Isset check to provide the ability to override 'NOT NULL' from a drupal datatype with 'NULL' for specific query.
+  if (isset($type['NULL'])) {
+    if (!$type['NULL'])
+      $query .= " NOT NULL ";
+  }
+  
+  if (!empty($type['auto_increment'])) 
+    $query .= " auto_increment ";
+  
+  if (isset($type['default']))
+    $query .= " DEFAULT '" . $type['default'] . "'";
+  
+  return db_query($query);
+} 
+
+/**
+* Drop column.
+* 
+* @param string $table 
+*   The table to be altered.
+* @param string $column 
+*   The column to be dropped.
+*/
+function db_drop_column($table, $column) {
+  return db_query('ALTER TABLE ' . db_escape_table($table) . ' DROP ' . $column);
+} 
+
+/**
+ * Set default value for $column.
+ *
+ * @param $table
+ * @param $column
+ *   The column to be altered.
+ * @param $default
+ *   Default value to be set.
  */
+function db_column_set_default($table, $column, $default) {
+  return db_query("ALTER TABLE " . db_escape_table($table) . " ALTER COLUMN " . $column . " SET DEFAULT '" . $default . "'");
+}
+
+/**
+* } End of "ingroup database".
+*/