sql语句错误： select a.* from en_wkcx_content as a,en_wkcx_class as b where a.cat_id=b.id and a.cat_id in(1135) 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
