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购买书籍或光盘后多久可以收到?
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update wedonet_user set user_atime=GetDate() where id=0
update wedonet_user set isonline=0 where isonline=1 and datediff(n,user_atime,GetDate())>20
select id,classid,tags,descrip,title,content from [wedonet_doc] where isdel=0 and ispass=1 and classid=766 and id=163
update [wedonet_doc] set hits=hits+1 where id=163
select top 10 id,title from [wedonet_keyword] order by mycount desc