常用数据库（MsSql,Oralce,MySql）用SQL实现分页查询

shenhp

　　－－SQL Server
从数据库表中的第M条记录开始取N条记录，利用Top关键字：注意如果Select语句中既有top，又有order by，则是从排序好的结果集中选择：
语句形式：
SELECT TOP 10 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 20 id
FROM TestTable
ORDER BY id) AS T))
ORDER BY ID

SELECT TOP 页大小 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 页大小*页数 id
FROM 表
ORDER BY id) AS T))
ORDER BY ID


－－SQL Server 2005
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在Sql Server 2005中，我们可以利用新增函数row_number()来更高效的实现分页存储
select*from(
　　selectrow_number()over(orderbyStudentInfoId)row,*fromStudentInfo)StudentInfo
　　whererowbetween@PageSize*(@PageIndex-1)and@PageSize*@PageIndex


　　

　　
－－Oralce数据库
从数据库表中第M条记录开始检索N条记录
SELECT *
FROM (SELECT ROWNUM　 r,　t1.* From　 表名称　 t1 where rownum < M + N) t2
where t2.r >= M

例如从表Sys_option（主键为sys_id)中从10条记录还是检索20条记录，语句如下：
SELECT *
FROM (SELECT ROWNUM R,t1.* From Sys_option where rownum < 30 ) t2
Where t2.R >= 10


－－My sql数据库
My sql数据库最简单，是利用mysql的LIMIT函数,LIMIT [offset,] rows从数据库表中M条记录开　　　始检索N条记录的语句为：
SELECT * FROM 表名称 LIMIT M,N
　　例如从表Sys_option（主键为sys_id)中从10条记录还是检索20条记录，语句如下：
select * from sys_option limit 10,20