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淺談基於SQL Server分頁存儲進程五種辦法及機能比擬

編輯：MSSQL

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在SQL Server數據庫操作中，我們經常會用到存儲進程對完成對查詢的數據的分頁處置，以便利閱讀者的閱讀。

創立數據庫data_Test ：

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

拔出數據：

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、應用select top 和select not in停止分頁

詳細代碼以下：

create procedure proc_paged_with_notin --應用select top and select not in  
(  
@pageIndex int, --頁索引  
@pageSize int  --每頁記載數  
)  
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後不支技直接接參數，所以寫成了字符串@sql  
select datediff(ms,@timediff,GetDate()) as 耗時  
set nocount off;  
end

2、應用select top 和 select max(列鍵)

create procedure proc_paged_with_selectMax --應用select top and select max(列)  
(  
@pageIndex int, --頁索引  
@pageSize int  --頁記載數  
)  
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、應用select top和中央變量

create procedure proc_paged_with_Midvar --應用ID>最年夜ID值和中央變量  
(  
@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、應用Row_number() 此辦法為SQL server 2005中新的辦法,應用Row_number()給數據行加上索引

create procedure proc_paged_with_Rownumber --應用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、應用暫時表及Row_number

create procedure proc_CTE --應用暫時表及Row_number  
(  
@pageIndex int, --頁索引  
@pageSize int  --頁記載數  
)  
as  
set nocount on;  
declare @ctestr nvarchar()  
declare @strSql nvarchar()  
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

以上的五種辦法中，網上說第三種應用select top和中央變量的辦法是效力最高的。關於SQL Server分頁存儲進程五種辦法及機能比擬的全體內容就到此停止了，願望對年夜家有所贊助。

MSSQL