--两次对表A查询效率较低
select top 10 *
from A
where ID not in (select top 30 ID from A)
--外层查询没有对表A查询,效率大有提高
select top 10 *
from (select top 40 * from A order by ID) as t
order by t.ID desc
--ROW_NUMBER()函数效率更高,sqlserver2005以及以上版本中才可以使用
select *
from (select ROW_NUMBER() over(order by ID) as ‘sequence‘,A.* from A ) as t
where t.sequence between 31 and 40
SELECT * FROM A Order by ID OFFSET 30 ROWS FETCH NEXT 10 ROWS ONLY
时间: 2024-10-27 07:49:18