ok,我們首先創(chuàng)建一數(shù)據(jù)庫(kù)：data_test,并在此數(shù)據(jù)庫(kù)中創(chuàng)建一表：tb_testtable

create database data_test --創(chuàng)建數(shù)據(jù)庫(kù)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?cè)跀?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(xiě)了五個(gè)常用存儲(chǔ)過(guò)程：

1，利用select top 和select not in進(jìn)行分頁(yè)，具體代碼如下：

create procedure proc_paged_with_notin --利用select top and select not in

(

@pageindex int, --頁(yè)索引

@pagesize int --每頁(yè)記錄數(shù)

)

as

begin

set nocount on;

declare @timediff datetime --耗時(shí)

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(xiě)成了字符串@sql

select datediff(ms,@timediff,getdate()) as 耗時(shí)

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(yè)索引

@pagesize int --頁(yè)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(shí)

set nocount off;

end

3,利用select top和中間變量--此方法因網(wǎng)上有人說(shuō)效果最佳，所以貼出來(lái)一同測(cè)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< 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(shí)

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(shí)

set nocount off;

end

5，利用臨時(shí)表及row_number

create procedure proc_cte --利用臨時(shí)表及row_number

(

@pageindex int, --頁(yè)索引

@pagesize int --頁(yè)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(chǔ)過(guò)程創(chuàng)建完畢，我們分別在每頁(yè)10條數(shù)據(jù)的情況下在第2頁(yè)，第1000頁(yè)，第10000頁(yè)，第100000頁(yè)，第199999頁(yè)進(jìn)行測(cè)試，耗時(shí)單位：ms 每頁(yè)測(cè)試5次取其平均值

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