PHP 实例:php 中使用临时表查询数据一个例子
使用临时表查询数据的一个例子,供大家学习参考
代码如下:
$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
) ;