Ошибка при работе с базой данных - Дизайн и модификация Invision Power Board

SELECT pid FROM ibf_posts WHERE topic_id=457 AND queued=0 ORDER BY  DESC LIMIT 0,1

Сообщение сервера: 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 'DESC LIMIT 0,1' at line 1
Код ошибки: 1064
Время: Tuesday 15th o  December 2009 11:38:30 AM

DROP TABLE IF EXISTS `ibf_posts`;
CREATE TABLE `ibf_posts` (
  `pid` int(10) NOT NULL auto_increment,
  `append_edit` tinyint(1) default '0',
  `edit_time` int(10) default NULL,
  `author_id` mediumint(8) NOT NULL default '0',
  `author_name` varchar(32) default NULL,
  `use_sig` tinyint(1) NOT NULL default '0',
  `use_emo` tinyint(1) NOT NULL default '0',
  `ip_address` varchar(16) NOT NULL default '',
  `post_date` int(10) default NULL,
  `icon_id` smallint(3) default NULL,
  `post` mediumtext,
  `queued` tinyint(1) NOT NULL default '0',
  `topic_id` int(10) NOT NULL default '0',
  `post_title` varchar(255) default NULL,
  `new_topic` tinyint(1) default '0',
  `edit_name` varchar(255) default NULL,
  `post_key` varchar(32) NOT NULL default '0',
  `post_parent` int(10) NOT NULL default '0',
  `post_htmlstate` smallint(1) NOT NULL default '0',
  `post_edit_reason` varchar(255) NOT NULL default '',
  PRIMARY KEY  (`pid`),
  KEY `topic_id` (`topic_id`,`queued`,`pid`,`post_date`),
  KEY `author_id` (`author_id`,`topic_id`),
  KEY `post_date` (`post_date`),
  KEY `ip_address` (`ip_address`),
  KEY `post_key` (`post_key`),
  FULLTEXT KEY `post` (`post`)
) ENGINE=MyISAM AUTO_INCREMENT=865 DEFAULT CHARSET=utf8;