几种常见SQL分页方式效率比较

create database DBTest
use DBTest

--创建测试表
create table pagetest
(
id int identity(1,1) not null,
col01 int null,
col02 nvarchar(50) null,
col03 datetime null
)

--1万记录集
declare @i int
set @i=0
while(@i<10000)
begin
    insert into pagetest select cast(floor(rand()*10000) as int),left(newid(),10),getdate()
    set @i=@i+1
end

--写法1，not in/top
select top 50 * from pagetest 
where id not in (select top 9900 id from pagetest order by id)
order by id




--写法2，not exists
select top 50 * from pagetest 
where not exists 
(select 1 from (select top 9900 id from pagetest order by id)a  where a.id=pagetest.id)
order by id

--写法3，max/top
select top 50 * from pagetest
where id>(select max(id) from (select top 9900 id from pagetest order by id)a)
order by id

--写法4，row_number()
select top 50 * from 
(select row_number()over(order by id)rownumber,* from pagetest)a
where rownumber>9900

select * from 
(select row_number()over(order by id)rownumber,* from pagetest)a
where rownumber>9900 and rownumber<9951

select * from 
(select row_number()over(order by id)rownumber,* from pagetest)a
where rownumber between 9901 and 9950

--写法5，在csdn上一帖子看到的，row_number() 变体，不基于已有字段产生记录序号，先按条件筛选以及排好序，再在结果集上给一常量列用于产生记录序号
select *
from (
    select row_number()over(order by tempColumn)rownumber,*
    from (select top 9950 tempColumn=0,* from pagetest where 1=1 order by id)a
)b
where rownumber>9900

declare @begin_date datetime
declare @end_date datetime
select @begin_date = getdate()

<.....YOUR CODE.....>

select @end_date = getdate()
select datediff(ms,@begin_date,@end_date) as '毫秒'

create proc [dbo].[spSqlPageByRownumber]
@tbName varchar(255),        --表名
@tbFields varchar(1000),      --返回字段
@PageSize int,                --页尺寸
@PageIndex int,                --页码
@strWhere varchar(1000),    --查询条件
@StrOrder varchar(255),  --排序条件
@Total int output            --返回总记录数
as
declare @strSql varchar(5000)    --主语句
declare @strSqlCount nvarchar(500)--查询记录总数主语句

--------------总记录数---------------
if @strWhere !=''
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName + ' where '+ @strWhere
end
else
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName
end
--------------分页------------
if @PageIndex <= 0
begin
  set @PageIndex = 1
end

set @strSql='Select * from (Select  row_number() over('+@strOrder+') rowId,'+ @tbFields
+' from ' + @tbName + ' where 1=1 ' + @strWhere+' ) tb where tb.rowId >'+str((@PageIndex-1)*@PageSize)
+' and tb.rowId <= ' +str(@PageIndex*@PageSize)

exec sp_executesql @strSqlCount,N'@TotalCout int output',@Total output
exec(@strSql)

create proc [dbo].[spSqlPageByMaxTop]
@tbName varchar(255),        --表名
@tbFields varchar(1000),      --返回字段
@PageSize int,                --页尺寸
@PageIndex int,                --页码
@strWhere varchar(1000),    --查询条件
@StrOrder varchar(255),  --排序条件
@Total int output            --返回总记录数
as
declare @strSql varchar(5000)    --主语句
declare @strSqlCount nvarchar(500)--查询记录总数主语句

--------------总记录数---------------
if @strWhere !=''
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName + ' where '+ @strWhere
end
else
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName
end
--------------分页------------
if @PageIndex <= 0
begin
  set @PageIndex = 1
end

set @strSql='select top '+str(@PageSize)+' * from ' + @tbName + '
where id>(select max(id) from (select top '+str((@PageIndex-1)*@PageSize)+' id from ' + @tbName + ''+@strOrder+')a)
'+@strOrder+''

exec sp_executesql @strSqlCount,N'@TotalCout int output',@Total output
exec(@strSql)

declare @count int
--exec [dbo].[spSqlPageByRownumber]'pagetest','*',50,20,'','order by id asc',@count output 
exec [dbo].[spSqlPageByMaxTop]'pagetest','*',50,20,'','order by id asc',@count output 
select @count