PHPMyWind安全警告：MySql Error！

错误文件：/proview.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 'or parentid=) AND delstate='' AND checkinfo=true ORDER BY orderid DESC' at line 1 Error sql: SELECT * FROM `pmw_infoimg` WHERE (classid= or parentid=) AND delstate='' AND checkinfo=true ORDER BY orderid DESC