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','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
以上的五種方法中，網上說第三種利用select top和中間變量的方法是效率最高的。
關于SQL Server數據庫分頁的存儲過程的五種方法及性能比較的知識就介紹到這里了，希望對大家的學習有所幫助。
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