PHPMyWind安全警告：MySql Error！

错误文件：/office.php
错误信息：Unknown column '500cid' in 'where clause' Error sql: SELECT distinct(loupanid) FROM `pmw_infolist` WHERE 1=1 AND (mianji>=300 AND mianji<=500cid=3by=posttime) AND delstate='' AND checkinfo=true ORDER BY id ASC