质量保障
SQL语句错误： SELECT a.* FROM wkcx_content AS a,wkcx_class AS b WHERE a.cat_id=b.id and a.xianshi='1' AND a.cat_id=1849 ORDER BY news_order ASC,add_time DESC limit -9,9
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 '-9,9' at line 1
