PHPMyWind安全警告：MySql Error！

错误文件：/m/news.php
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 'AND flag like '%t%' AND delstate='' AND checkinfo=true ORDER BY orderid DESC,id ' at line 1 Error sql: SELECT * FROM `pmw_infolist` WHERE classid= AND flag like '%t%' AND delstate='' AND checkinfo=true ORDER BY orderid DESC,id DESC LIMIT 1