DZ论坛删帖时怎么出现这个错误呀，谁帮忙解答下该怎样解决：
Discuz! info: MySQL Query Error

User: 21caiku
Time: 2007-4-30 10:11am
Script: /topicadmin.php

SQL: UPDATE 21_members SET WHERE uid = 1
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 'WHERE uid = 1' at line 1
Errno.: 1064

Similar error report has beed dispatched to administrator before.

谢谢大家了！