--- includes\database.mysql.inc.orig	Thu Apr 27 22:38:49 2006
+++ includes\database.mysql.inc	Sat May 13 17:12:33 2006
@@ -364,6 +364,224 @@
 }
 
 /**
+ * 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, 'suffix' => 'UNSIGNED NOT NULL', '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, 'suffix' => 'NOT NULL', '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, it accepts the following keys:
+ *              'type' - the drupal datatype [required]
+ *              'length' [optional]
+ *              'suffix' - i.e. 'NULL' or 'UNSIGNED NOT NULL' [optional]
+ *              'default' - default value for the column [optional]
+ *              'key' - 
+ *                  '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'];
+                
+        foreach ($typedefs[$datatype] as $key=>$value) {
+            if (!isset($type[$key])) 
+                $type[$key] = $value;
+        }    
+        
+        $query .= "`".$name."` ".$type['type'];
+
+        if (isset($type['length'])) 
+            $query .= "(" . $type['length'] . ") ";
+
+        if (isset($type['suffix'])) 
+            $query .= " " . $type['suffix'];
+
+        if (isset($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 (" . $current . "), ";
+    }
+    
+    if (isset($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 $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 string $table 
+ *      the table to be altered
+ * @param string name
+ *      the index's name
+ * @param mixed $columns
+ *      is an array of column names, or just a string with a single column name.
+ */
+function db_create_index($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 $table
+ * 
+ * @param string $table 
+ *      name of the table to be altered
+ * @param string $column
+ *      name of the column to be added
+ * @param mixed $type 
+ *      can either be a string (containing a datatype, the default properties will be used) or 
+ *      an associative array (to specify more properties).
+ *      if the latter is used, it accepts the following keys:
+ *          'type' - the datatype [required]
+ *          'length' [optional]
+ *          'suffix' - i.e. 'NULL' or 'UNSIGNED NOT NULL' [optional
+ *          'default' - default value for the column [optional]
+ */
+function db_add_column($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 .= "(" . $type['length'] . ") ";
+
+    if (isset($type['suffix'])) 
+        $query .= " " . $type['suffix'];
+
+    if (isset($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);
+}
+
+/**
  * @} End of "ingroup database".
  */