$sql3="CREATE TEMPORARY TABLE atmp_table(uid int(11),dnum int(20) not null)";  mysql_query($sql3);  $sql3="INSERT into atmp_table(uid,dnum) SELECT uid,count(soid) as dnum          FROM `cy_score2`          where (nei='下载' or nei='下载试题')            group by uid having dnum>150          order by dnum desc limit 10";  mysql_query($sql3);  $sql3="select a.uid,count(b.tid) as unum from atmp_table a left join cy_test b on a.uid=b.uid          group by b.uid          order by a.dnum desc,unum asc limit 5";  $query4=mysql_query($sql3);  $rs=mysql_fetch_array($query4) ;