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select id,classid,ttid,onclick,plnum,totaldown,newspath,filename,userid,username,firsttitle,isgood,ispic,istop,isqf,ismember,isurl,truetime,lastdotime,havehtml,groupid,userfen,titlefont,titleurl,stb,fstb,restb,keyboard,eckuid,title,ftitle,newstime,titlepic,smalltext,diggtop from ***_ecms_xuexi where classid in (209,210,211,217,230,231,236,237,238,239,240,260,268,269,270,275,278,279,282,323) order by newstime DESC limit 411880,20