Форум пользователей MySQL

SQL-запрос:

-- --------------------------------------------------------
--
-- Структура таблицы `jos_usergroups`
--
CREATE TABLE IF NOT EXISTS `jos_usergroups` (
`id` int( 10 ) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Primary Key',
`parent_id` int( 10 ) unsigned NOT NULL DEFAULT '0' COMMENT 'Adjacency List Reference Id',
`lft` int( 11 ) NOT NULL DEFAULT '0' COMMENT 'Nested set lft.',
`rgt` int( 11 ) NOT NULL DEFAULT '0' COMMENT 'Nested set rgt.',
`title` varchar( 100 ) NOT NULL DEFAULT '',
PRIMARY KEY ( `id` ) ,
UNIQUE KEY `idx_usergroup_parent_title_lookup` ( `parent_id` , `title` ) ,
KEY `idx_usergroup_title_lookup` ( `title` ) ,
KEY `idx_usergroup_adjacency_lookup` ( `parent_id` ) ,
KEY `idx_usergroup_nested_set_lookup` ( `lft` , `rgt` ) USING BTREE
) ENGINE = MYISAM DEFAULT CHARSET = utf8 AUTO_INCREMENT =9;



Ответ MySQL:  
 #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'USING BTREE
 ) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=9' at line 11