oraclesql中groupby后如何加入

2guxujil 于 2021-07-27 发布在 Java

关注(0)|答案(2)|浏览(283)

我有以下示例sql这个sql不起作用。
我想在分组后加入。我试图提取表作为 tran 然后我希望加入描述表 t2 至 tran .

select *
from (  
    select count(t.code),t.code
    from  table t
    group by t.code
    order by count(t.code) desc ) as tran

left join code_description t2
on tran.code = t2.code

我犯了以下错误 ORA-00933: SQL command not properly ended 什么是错误的观点？我怎样才能修好它们？
谢谢

sql oracle

来源：https://stackoverflow.com/questions/63166429/how-to-join-after-groupby-in-oracle-sql

2条答案

按热度按时间

insrf1ej1#

请试试这个：

select *
from (  
    select count(t.code) as kol,t.code
    from  table t
    group by t.code
     ) as tran

left join code_description t2
on tran.code = t2.code
order by tran.kol desc

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wpx232ag2#

使用 order by 子查询外

select 
  *
from 
  (  
    select 
      count(t.code) as total,
      t.code
    from  table t
    group by t.code
  ) as tran

left join code_description t2
on tran.code = t2.code
order by tran.total desc

赞(0）回复(0）举报 2021-07-27

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oraclesql中groupby后如何加入

2条答案

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