sql语句为：SELECT realname,phone,fax,mobile,qq,msn, coname,coaddress FROM lam_user AS u, lam_user_co AS co WHERE u.userid= AND u.userid=co.userid LIMIT 1

错误信息为：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 'AND u.userid=co.userid LIMIT 1' at line 1

发生错误的页面为：/ec/55.html