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Home Backend Development PHP Tutorial php 查询sql server 2008的问题

php 查询sql server 2008的问题

Jun 23, 2016 pm 01:48 PM
php server sql Inquire

我想要php分页从sql server 2008获取数据,

1.   mysql 可以 limit n,m  ,sql server没有
2.   要分页获取 union  后的数据, 网上看到有用rownum 和 top 的,请问怎么与union结合实现呢


我的结果集类似于

(select A,B,C,D from t1) union (select '100' as A ,B,C,D  from t2)  union (select A,B,C,D from t3)
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想限制每次返回结果集的 哪一条到哪一条


回复讨论(解决方案)

这样写:

$sql = '你的sql查询指令';$start = 1; //起始偏移$pagesize = 20; //每页行数$sqls =<<< SQLSELECT * FROM (SELECT A.*, ROWNUM RN FROM ($sql) A WHERE ROWNUM < $start+$pagesize)WHERE RN >= $startSQL;
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$sqls 就是最终执行的查询语句

理解了,原来我的问题在于 不知道给union 的结果取个别名,谢谢版主大人~~

最后结合百度 我是这样写的

SELECT * FROM (     SELECT  * , ROW_NUMBER() OVER (ORDER BY A DESC) AS rn          FROM  ($sql)  AS s1)AS s2  where rn between $from and $to
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