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)
--1000万记录集
delete from pagetest
declare @i int
set @i=0
while(@i<10000000)
begin
insert into pagetest
select cast(floor(rand()*10000) as int),left(newid(),10),getdate()
set @i=@i+1
end
--数据库没插入那么多只插入了4005805 条 测试结果
--设定开始和结束的时间,页大小 和 页
declare @begin_date datetime,@end_date datetime
declare @pagesize int ,@curPage int
declare @strSql varchar(800)
set @pagesize=50
set @curPage=78000 --第万页的数据
select @begin_date = getdate()
--用top not in
--set @strSql='select top '+ cast(@pagesize as varchar(50))+' * from pagetest where
--id not in (select top '+Cast(@pagesize*(@curPage-1) as varchar(50)) +' id from pagetest)'
--exec(@strSql)
--用not exists
--select top 50 * from pagetest where
--not exists (select 1 from (select top (50*78000) id from pagetest) as a where a.id =pagetest.id )
--order by id
--用max、top
--select top 50 * from pagetest
--where id >(select max(id) from (select top (50*78000) id from pagetest) as a)
--order by id
-- 用row_number
--select top 50 * from
--(select row_number()over(order by id) rid,* from pagetest) as tbTemp
--where rid>(50*78000)
--select * from (select row_number()over(order by id) rid,* from pagetest) as tbTemp
--where rid>50*78000 and rid<=(50*(78000+1))
--select * from (select row_number()over(order by id) rid,* from pagetest) as tbTemp
--where rid between 50*78000 and 50*(78000+1)
--csdn 的另外的一种方法
select * from (
select row_number()over(order by rowcol) rid,*
from (select top (50*(78000+1)) rowcol=0,* from dbo.pagetest order by id )
as a
) as b
where b.rid >50*78000
select @end_date = getdate()
select datediff(ms,@begin_date,@end_date) as '毫秒'
在同样400万条数据中，用max .top 这种方法是最快的
