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    SQL Server 大量數(shù)據(jù)的分頁存儲過程代碼
    來源:易賢網(wǎng) 閱讀:969 次 日期:2014-11-03 12:18:00
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    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

    更多信息請查看IT技術專欄

    更多信息請查看數(shù)據(jù)庫
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