使用临时表查询数据的一个例子
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2016-07-25 09:05:44
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$sql3="CREATE TEMPORARY TABLE atmp_table(uid int(11),dnum int(20) not null)"; - mysql_query($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) ;
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