Question

我正在尝试在工作中进行查询，在其中我计算一个表中所有出现的id，然后将描述和与这些ID相关联的颜色从另一个表中链接。

但我似乎搞砸了我的SQL语法（已经有一段时间了，抱歉！）。这可能只是一个愚蠢的错误，无论谁能帮助我，我都会非常感激！

SELECT 
    t1.activity_status_id,
    count(*),
    t2.description,
    t2.color
FROM
    dbo.Activity t1
INNER JOIN (
    dbo.Activity_Status t2 ON t1.activity_status_id = t2.id)
GROUP BY
    activity_status_id

Answer 1

 SELECT t1.activity_status_id,
       Count(*),
       t2.description,
       t2.color
FROM   dbo.Activity t1
       INNER JOIN dbo.Activity_Status t2
               ON t1.activity_status_id = t2.id
GROUP  BY t1.activity_status_id ,t2.description,t2.color

Answer 2

只需删除内部联接周围不必要的括号(和)：

SELECT ....
FROM
    dbo.Activity t1
    INNER JOIN dbo.Activity_Status t2 ON t1.activity_status_id = t2.id
GROUP BY ....

关键字On附近的语法不正确

2 个答案: