Query Error: UPDATE hd_threads t INNER JOIN hd_hits_threads h ON t.tid=h.tid SET t.hits=h.hits WHERE t.tid IN () The URL Is: http://m.houdao.com/thread.php?fid=12033&&type=83034 MySQL Server 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 ( 1064 ) 故障反馈请mail:admin@houdao.com，谢谢支持！