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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 top 10 id,classid,title from [wedonet_doc] where isdel=0 and ispass=1 and cid=5 and classid in (969) order by istop desc,cls asc,id desc select top 10 id,classid,title from [wedonet_doc] where isdel=0 and ispass=1 and cid=5 and classid in (970) order by istop desc,cls asc,id desc select top 10 id,classid,title from [wedonet_doc] where isdel=0 and ispass=1 and cid=5 and classid in (971) order by istop desc,cls asc,id desc select top 10 id,classid,title from [wedonet_doc] where isdel=0 and ispass=1 and cid=5 and classid in (972) order by istop desc,cls asc,id desc select top 10 id,classid,title from [wedonet_doc] where isdel=0 and ispass=1 and cid=5 and classid in (973) order by istop desc,cls asc,id desc select top 8 id,classid,preimg,etime,title,price from [wedonet_book] where isdel=0 and ispass=1 and cid=22 and classid<>-2 and isgood=1 order by istop desc,cls asc,id desc select top 10 id,title from [wedonet_keyword] order by mycount desc