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HomeDatabaseMysql Tutorial[转]四种方式实现SQLServer 分页查询

[转]四种方式实现SQLServer 分页查询

Jun 07, 2016 pm 03:33 PM
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http://www.cnblogs.com/Bulid-For-NET/archive/2012/12/16/2820097.html SQLServer 的数据分页: 假设现在有这样的一张表: CREATE TABLE test ( id int primary key not null identity, names varchar(20) ) 然后向里面插入大约1000条数据,进行分页测试 假

http://www.cnblogs.com/Bulid-For-NET/archive/2012/12/16/2820097.html

SQLServer 的数据分页:

假设现在有这样的一张表:
CREATE TABLE test
(
 id int primary key not null identity,
 names varchar(20)
)
然后向里面插入大约1000条数据,进行分页测试
假设页数是10,现在要拿出第5页的内容,查询语句如下:
--10代表分页的大小
select top 10 *
from test
where id not in
(
 --40是这么计算出来的:10*(5-1)
 select top 40 id from test order by id
)
order by id
原理:需要拿出数据库的第5页,就是40-50条记录。首先拿出数据库中的前40条记录的id值,然后再拿出剩余部分的前10条元素


第二种方法:
还是以上面的结果为例,采用另外的一种方法
--数据的意思和上面提及的一样
select top 10 *
from test
where id >
(
 select isnull(max(id),0)
 from 
  (
   select top 40 id from test order by id
  ) A
)
order by id
原理:先查询前40条记录,然后获得其最id值,如果id值为null的,那么就返回0
然后查询id值大于前40条记录的最大id值的记录。
这个查询有一个条件,就是id必须是int类型的。


第三种方法:
select top 10 *
from 
(
 select row_number() over(order by id) as rownumber,* from test
) A
where rownumber > 40
原理:先把表中的所有数据都按照一个rowNumber进行排序,然后查询rownuber大于40的前十条记录
这种方法和oracle中的一种分页方式类似,不过只支持2005版本以上的

第四种:
存储过程查询
创建存储过程
alter procedure pageDemo
@pageSize int,
@page int
AS
declare @temp int
set @temp=@pageSize*(@page - 1)
begin
 select top (select @pageSize) * from test where id not in (select top (select @temp) id from test) order by id
end
执行存储过程
exec 10,5

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