五种SQL Server分页存储过程的方法及性能比较

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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 ：

create database 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：

set identity_insert tb_TestTable on  
 
declare @count int  
 
set@count=1  
 
while @count<=2000000  
 
begin  
 
insert into tb_TestTable(id,userName,userPWD,userEmail) values(@count,'admin','admin888','[email protected]')  
 
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：

create procedure proc_paged_with_notin --利用select top and select not in  
 
(  
 
@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)

create procedure proc_paged_with_selectMax --利用select top and select max(列)  
 
(  
 
@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,@timediff,GetDate()) as 耗时  
 
set nocount off;  
 
end

3、利用select top和中间变量

create procedure proc_paged_with_Midvar --利用ID>最大ID值和中间变量  
 
(  
 
@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,@timediff,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

create procedure proc_paged_with_Rownumber --利用SQL 2005中的Row_number()  
 
(  
 
@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,@timediff,getdate()) as 耗时  
 
set nocount off;  
 
end

5、利用临时表及Row_number

create procedure proc_CTE --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  
 
execute sp_executesql @strSql  
 
select datediff(ms,@datediff,GetDate())  
 
set nocount off;  
 
end

以上的五种方法中，网上说第三种利用select top和中间变量的方法是效率最高的。

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