从SQL查询

Question

我使用SQL Server查询表中的某些行，我需要在行20-30之间返回元素，这是怎么回事？

这是我的疑问：

select * 
from PostsView 
where EnumKey = " & CategoryId & "
  and IsDeleted = 'False'
order by CreationDate desc

请帮帮我

Answer 1

一种方法：

select TOP 11 *
from  (select TOP 30 *
       from PostsView 
       where EnumKey = " & CategoryId & " And IsDeleted = 'False'
       Order By CreationDate Desc
      ) t
Order By CreateDate ASC;

（您可以使用其他子查询再次颠倒顺序。）

或者，在更新版本的SQL Server中：

OFFSET 19 FETCH NEXT 11 ROWS

或者，使用row_number()。

Answer 2

您可以指定行号，然后选择行20-30（假设您在应用where子句后需要行20-30，而不是基于表的完整内容）。

;With CTE as (
  select *, row_number over (order by CreationDate Desc) as RN 
  from PostsView 
  where EnumKey = " & CategoryId & "
  And IsDeleted = 'False')

Select * from CTE where RN between 20 and 30