查询语句为:SELECT Top 20 ID,UserName,UserID,Subject,AddTime,Verific,LastReplayUser,LastReplayUserID,LastReplayTime,TotalReplay,BoardID,Hits,IsPic,IsTop,IsBest,PostType,AnnexExt,CategoryId,ShowScore From KS_GuestBook Where deltf=0 and verific<>0 and datediff('d',AddTime,Now())<365 and boardid=39 and istop=0 ORDER BY IsTop Desc,LastReplayTime Desc
错误信息为:对象关闭时,不允许操作。