五種SQL Server分頁存儲(chǔ)過程的方法及性能比較

更新時(shí)間：2015年08月24日 09:15:35 投稿：lijiao

本文主要介紹了SQL Server數(shù)據(jù)庫分頁的存儲(chǔ)過程的五種方法以及它們之間性能的比較，并給出了詳細(xì)的代碼，希望能夠?qū)δ兴鶐椭?/div>

在SQL Server數(shù)據(jù)庫操作中，我們常常會(huì)用到存儲(chǔ)過程對實(shí)現(xiàn)對查詢的數(shù)據(jù)的分頁處理，以方便瀏覽者的瀏覽。本文我們總結(jié)了五種SQL Server分頁存儲(chǔ)過程的方法，并對其性能進(jìn)行了比較，接下來就讓我們來一起了解一下這一過程。

創(chuàng)建數(shù)據(jù)庫data_Test ：

create database data_Test  
 
GO  
 
use data_Test  
 
GO  
 
create table tb_TestTable  --創(chuàng)建表  
 
(  
 
id int identity(1,1) primary key,  
 
userName nvarchar(20) not null,  
 
userPWD nvarchar(20) not null,  
 
userEmail nvarchar(40) null  
 
)  
 
GO

插入數(shù)據(jù)：

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','lli0077@yahoo.com.cn')  
 
set @count=@count+1  
 
end  
 
set identity_insert tb_TestTable off

1、利用select top 和select not in進(jìn)行分頁

具體代碼如下：

create procedure proc_paged_with_notin --利用select top and select not in  
 
(  
 
@pageIndex int, --頁索引  
 
@pageSize int  --每頁記錄數(shù)  
 
)  
 
as  
 
begin  
 
set nocount on;  
 
declare @timediff datetime --耗時(shí)  
 
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后不支技直接接參數(shù)，所以寫成了字符串@sql  
 
select datediff(ms,@timediff,GetDate()) as 耗時(shí)  
 
set nocount off;  
 
end

2、利用select top 和 select max(列鍵)

create procedure proc_paged_with_selectMax --利用select top and select max(列)  
 
(  
 
@pageIndex int, --頁索引  
 
@pageSize int  --頁記錄數(shù)  
 
)  
 
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 耗時(shí)  
 
set nocount off;  
 
end

3、利用select top和中間變量

create procedure proc_paged_with_Midvar --利用ID>最大ID值和中間變量  
 
(  
 
@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 耗時(shí)  
 
set nocount off;  
 
end

4、利用Row_number() 此方法為SQL server 2005中新的方法,利用Row_number()給數(shù)據(jù)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 耗時(shí)  
 
set nocount off;  
 
end

5、利用臨時(shí)表及Row_number

create procedure proc_CTE --利用臨時(shí)表及Row_number  
 
(  
 
@pageIndex int, --頁索引  
 
@pageSize int  --頁記錄數(shù)  
 
)  
 
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

以上的五種方法中，網(wǎng)上說第三種利用select top和中間變量的方法是效率最高的。

關(guān)于SQL Server數(shù)據(jù)庫分頁的存儲(chǔ)過程的五種方法及性能比較的知識(shí)就介紹到這里了，希望對大家的學(xué)習(xí)有所幫助。

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