Discuz! info: MySQL Query Error

Time: 2008-10-6 9:37pm
Script: /searchad.php

SQL: select * from rsh_cmd where lang=
Error: 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
Errno.: 1064

Similar error report has beed dispatched to administrator before.