在sql Server数据库操作中，我们常常会用到存储过程对实现对查询的数据的分页处理，以方便浏览者的浏览。本文我们总结了五种sql Server分页存储过程的方法，并对其性能进行了比较，接下来就让我们来一起了解一下这一过程。
创建数据库data_Test ：
GO
use data_Test
GO
create table tb_TestTable --创建表
(
id int identity(1,1) primary key,userName nvarchar(20) not null,userPWD nvarchar(20) not null,userEmail nvarchar(40) null
)
GO
插入数据
：declare @count int
set@count=1
while @count<=2000000
begin
insert into tb_TestTable(id,userName,userPWD,userEmail) values(@count,'admin','admin888','lli0077@yahoo.com.cn')
set @count=@count+1
end
set identity_insert tb_TestTable off
1、利用select top 和select not in进行分页
具体代码如下：
(
@pageIndex int,--页索引
@pageSize int --每页记录数
)
as
begin
set nocount on;
declare @timediff datetime --耗时
declare @sql nvarchar(500)
select @timediff=Getdate()
set @sql='select top '+str(@pageSize)+' from tb_TestTable where(ID not in(select top '+str(@pageSize@pageIndex)+' id from tb_TestTable order by ID ASC)) order by ID'
execute(@sql) --因select top后不支技直接接参数，所以写成了字符串@sql
select datediff(ms,@timediff,GetDate()) as 耗时
set nocount off;
end
2、利用select top 和 select max(列键)
@pageIndex int,--页索引
@pageSize int --页记录数
)
as
begin
set nocount on;
declare @timediff datetime
declare @sql nvarchar(500)
select @timediff=Getdate()
set @sql='select top '+str(@pageSize)+' From tb_TestTable where(ID>(select max(id) From (select top '+str(@pageSize@pageIndex)+' id From tb_TestTable order by ID) as TempTable)) order by ID'
execute(@sql)
select datediff(ms,GetDate()) as 耗时
set nocount off;
end
3、利用select top和中间变量
(
@pageIndex int,@pageSize int
)
as
declare @count int
declare @ID int
declare @timediff datetime
declare @sql nvarchar(500)
begin
set nocount on;
select @count=0,@ID=0,@timediff=getdate()
select @count=@count+1,@ID=case when @count<=@pageSize*@pageIndex then ID else @ID end from tb_testTable order by id
set @sql='select top '+str(@pageSize)+' * from tb_testTable where ID>'+str(@ID)
execute(@sql)
select datediff(ms,getdate()) as 耗时
set nocount off;
end
4、利用Row_number() 此方法为sql server 2005中新的方法,利用Row_number()给数据行加上索引
@pageIndex int,@pageSize int
)
as
declare @timediff datetime
begin
set nocount on;
select @timediff=getdate()
select from (select ,Row_number() over(order by ID asc) as IDRank from tb_testTable) as IDWithRowNumber where IDRank>@pageSize@pageIndex and IDRank<@pageSize(@pageIndex+1)
select datediff(ms,getdate()) as 耗时
set nocount off;
end
5、利用临时表及Row_number
(
@pageIndex int,--页索引
@pageSize int --页记录数
)
as
set nocount on;
declare @ctestr nvarchar(400)
declare @strsql nvarchar(400)
declare @datediff datetime
begin
select @datediff=GetDate()
set @ctestr='with Table_CTE as
(select ceiling((Row_number() over(order by ID ASC))/'+str(@pageSize)+') as page_num,* from tb_TestTable)';
set @strsql=@ctestr+' select * From Table_CTE where page_num='+str(@pageIndex)
end
begin
select datediff(ms,@datediff,GetDate())
set nocount off;
end
