Unknown column 'mnum' in 'order clause'<br>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,title,titlepic,newstime,video,fg,xrq,price,ruanjian,downfen,filesize from ***_ecms_map where classid in (580,581,582,584,585,586,587,588,589,590,591,592,593,594,595,596,597,598,599,600,601,602,603,604,605,607,608,609,610,611,612,613,614,615,617,618,619,620,621,622,623,624,625,626,628,629,630,631,632,633,635,636,637,638,639,640,641,642,643,645,646,647,648,649,650,651,653,654,655,657,658,659,660,661,662,663,664,665,666,667,668,670,671,672,673,674,675,676,677,678,679,680,681,683,684,685,686,687,688,689,690,691,692,693,694,695,696,698,699,700,701,702,703,704,705,706,707,708,709,710,711,712,713,714,715,717,718,720,721,723,724,725,726,728,730,732,733,734,735,736,737,738,739,741,742,743,744,745,746,747,748,749,750,751) order by istop desc,mnum desc,downfen desc,totaldown desc limit 0,40