PHPMyWind安全警告：MySql Error！

错误文件：/wapfuwumessage.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 '' at line 1 Error sql: SELECT * FROM `jzm_cascadedata` WHERE `datagroup`='area' AND level=0 and `datavalue` =