本文由武林網小編給大家分享了五種sqlserver分頁存儲過程及性能比較,接下來我們跟著小編一起了解了解吧
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。
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()
- 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分頁存儲過程五種方法及性能比較的全部內容就到此結束了,希望對大家有所幫助。
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