php中使用临时表查询数据的一个例子

　　$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) ;