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        SQL Server 大量數(shù)據(jù)的分頁存儲過程代碼

        字號:


            OK,我們首先創(chuàng)建一數(shù)據(jù)庫:data_Test,并在此數(shù)據(jù)庫中創(chuàng)建一表:tb_TestTable
            create database data_Test --創(chuàng)建數(shù)據(jù)庫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
            然后我們在數(shù)據(jù)表中插入2000000條數(shù)據(jù):
            --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
            我首先寫了五個常用存儲過程:
            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(shù)
            )
            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(shù),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(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
            set nocount off;
            end
            3,利用select top和中間變量--此方法因網(wǎng)上有人說效果最佳,所以貼出來一同測試
            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(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
            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(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
            OK,至此,存儲過程創(chuàng)建完畢,我們分別在每頁10條數(shù)據(jù)的情況下在第2頁,第1000頁,第10000頁,第100000頁,第199999頁進行測試,耗時單位:ms 每頁測試5次取其平均值