SQL Server 分页

--写法1，not in/top
select top50 *from pagetest
where id not in (select top9900 id from pagetest order by id)
order by id
--写法2，not exists
select top50 *from pagetest
where not exists
(select 1from (select top 9900 id from pagetest order by id)a  where a.id=pagetest.id)
order by id
--写法3，max/top
select top50 *from pagetest
where id>(selectmax(id) from (selecttop 9900 idfrom pagetest orderby id)a)
order by id
--写法4，row_number()
select top50 *from
(select row_number()over(orderby id)rownumber,*from pagetest)a
where rownumber>9900

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

select * from
(select row_number()over(orderby id)rownumber,*from pagetest)a
where rownumber between9901 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(orderbytempColumn)rownumber,*
    from (select top 9950 tempColumn=0,*from pagetest where1=1order by id)a
)b
where rownumber>9900

Oracle 分页

经典的三层嵌套

select*from(select a.*,rownum row_num from(select*from mytable t orderby t.id desc) a) b where b.row_num between1and10

 

 

MySQL分页

一句Limit搞定

SELECT*FROMtable  LIMIT [offset,] rows | rows OFFSET offset