SQL语句错误： SELECT a.* FROM wkcx_content AS a,wkcx_class AS b WHERE a.cat_id=b.id AND a.cat_id=1362 ORDER BY news_order ASC,add_time DESC limit -6,6
错误信息： 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 '-6,6' at line 1