Query Error: SELECT * FROM pw_threads WHERE fid!=0 AND tid IN('5','78') ORDER BY specialsort DESC,lastpost DESC LIMIT 0,2

The URL Is:
http://bdxfans.com/m/index.php?a=forum&fid=2

MySQL Server Error:
Unknown column 'specialsort' in 'order clause' ( 1054 ) 查看错误相关信息

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