Question

select ROW_NUMBER() over(PARTITION by number order by number) as rn 
from (select t1.id as number,
             t1.name as name from #a as T1 
      join #a T2 on T1.id=T2.id)

为什么此查询无法正常工作

显示错误.....

Msg 102，Level 15，State 1，Line 6 '）'附近的语法不正确。

Answer 1

MSSQL要求派生表（from子句中的子选择）为named。只需将您的查询更改为：

select ROW_NUMBER() over(PARTITION by number order by number)as rn 
from 
(  
select t1.id as number,t1.name as name from  #a as T1  join #a T2 on T1.id=T2.id 
) subquery1

应该解决你的问题。

为什么这个查询不起作用

1 个答案: