Query Error: SELECT t.*,m.uid,m.username,m.gender,m.oicq,m.aliww,m.groupid,m.memberid,m.icon AS micon,m.hack,m.honor,m.signature,m.regdate,m.medals,m.userstatus,md.postnum,md.digests,md.rvrc,md.money,md.credit,md.currency,md.thisvisit,md.lastvisit,md.onlinetime,md.starttime FROM pw_posts t LEFT JOIN pw_members m ON m.uid=t.authorid LEFT JOIN pw_memberdata md ON md.uid=t.authorid WHERE t.tid='3056261' AND t.ifcheck='1' ORDER BY t.postdate DESC LIMIT 0,1 The URL Is: http://pi196.com/bbs/read.php?fpage=0&page=2&tid=3056261 MySQL Server Error: Unknown column 'md.currency' in 'field list' ( 1054 ) 查看错误相关信息 You Can Get Help In: http://www.phpwind.net