五種SQL Server分頁存儲過程的方法及性能比較

2024-08-31 01:03:11

字體：大中小

來源：轉載

供稿：網友

本文主要介紹了SQL Server數據庫分頁的存儲過程的五種方法以及它們之間性能的比較，并給出了詳細的代碼，希望能夠對您有所幫助。

在SQL Server數據庫操作中，我們常常會用到存儲過程對實現對查詢的數據的分頁處理，以方便瀏覽者的瀏覽。本文我們總結了五種SQL Server分頁存儲過程的方法，并對其性能進行了比較，接下來就讓我們來一起了解一下這一過程。

創建數據庫data_Test ：

create database data_Test

GO

use data_Test

GO

create table tb_TestTable --創建表

(

id int identity(1,1) primary key,

userName nvarchar(20) not null,

userPWD nvarchar(20) not null,

userEmail nvarchar(40) null

)

GO

插入數據

：

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進行分頁

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

)

as

begin

set nocount on;

declare @timediff datetime --耗時

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，所以寫成了字符串@sql

select datediff(ms,@timediff,GetDate()) as 耗時

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

)

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

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

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()給數據行加上索引

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

set nocount off;

end

5、利用臨時表及Row_number

create procedure proc_CTE --利用臨時表及Row_number

(

@pageIndex int, --頁索引

@pageSize int --頁記錄數

)

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