sql server 各种查询sql语句的分页存储过的执行效率

 create database data_test 
on primary

(

name=‘data_test_data‘,

filename=‘C:\data_test_data.mdf‘,

size=5mb,

maxsize=100mb,

filegrowth=15%

)

log on

(

name=‘data_test_log‘,

filename=‘C:\data_test_log.ldf‘,

size=2mb,

filegrowth=1mb

)

go

use data_test

go

create table tb_testtable

(

id int identity (1,1) primary key,

username nvarchar(20) not null,

userpwd nvarchar(20) not null,

userEmail nvarchar(40) null

)


set identity_insert tb_testtable on

declare @count int

set @count=1

while @count<=200000

begin

insert into tb_testtable (id,username,userpwd,useremail) values(@count,‘admin‘,‘admin888‘,‘lihfei89@163.com‘)

set @count=@count+1

end

set identity_insert tb_testtable off


--利用select top and select not in 耗时1533s

--select top 10 * from tb_testtable where (id not in(select top 15 id from tb_testtable order by id asc)) order by id


create procedure proc_page_withnotin

(

@pageIndex int,--页索引

@pageSize int--每页显示数

)

as

begin

set nocount on;

declare @timediff datetime --消耗时间

declare @sql nvarchar(500)

select @timediff =Getdate()

set @sql = ‘select top ‘ +str(@pageSize) +‘ * from tb_testtable where (id not in (select top ‘ + str((@pageIndex-1) * @pageSize) +‘ id from tb_testtable order by id)) order by id‘

execute(@sql) --因select top后不支技直接接参数，所以写成了字符串@sql

select datediff(ms,@timediff,Getdate()) as wastetime

set nocount off;

end


--利用select top and select max耗时33s

--select top 10 * from tb_testtable where

--(id > (select max(id) from (select top 10 id from tb_testtable order by id ) as temp ))

--order by id


create procedure proc_page_withtopmax

(

@pageIndex int,

@pageSize int

)

as

begin

set nocount on;

declare @timediff datetime

declare @sql nvarchar(500)

select @timediff=getDate()

set @sql=‘select top 10 * from tb_testtable where (id> (select max(id) from (select top ‘+str((@pageIndex-1)*@pageSize)+‘ id from tb_testtable order by id) as temp)) order by id‘

execute(@sql)

select datediff(ms,@timediff,getdate()) as wastetime

set nocount off;

end




--利用Row_number()耗时1633s

--select * from (select *,row_number() over(order by id) rn from tb_testtable) as temp where rn between 11 and 20

create procedure proc_pagewithrownumber

(

@pageIndex int,

@pageSize int

)

as

begin

set nocount on;

declare @timediff datetime

declare @sql nvarchar(500)

select @timediff=getdate()

set @sql=‘select * from (select *,row_number() over (order by id) rn from tb_testtable) as temp where rn between ‘+str((@pageIndex-1)*@pageSize +1 )+‘ and ‘ +str(@pageIndex*@pageSize)

execute(@sql)

select datediff(ms,@timediff,getdate()) as wastetime

set nocount off;

end



exec proc_page_withnotin 2,100000-- wastetime(1533)

exec proc_page_withtopmax 2,100000--wastetime(33)

exec proc_pagewithrownumber 2,100000--wastetime(1633)