sql - sql查询错误

Question

select E.Job_ID, count(*), max(Employee_Salary) as kos, avg(Employee_Salary)
    from Employee E  
    inner join JOB D on E.Job_ID = D.Job_ID
    group by E.Job_ID

我想通过 D.Functio 订购我的结果，但我有这个错误

Msg 8120, Level 16, State 1, Line 1
Column 'JOB.Functio' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Answer 1

错误消息有什么不清楚的地方？您正在尝试按未聚合的内容进行排序。这是一种解决方案：

order by max(d.Functio)

问题是别名“job”未知。您需要使用分配给表格的“d”。

这应该可行，因为大概有一个 job.Functio 每个作业 ID。另一个解决方法是将其更改group by为：

group by e.Job_ID, d.Job.Functio

Answer 2

如果它是描述性列（工作职能？），您想将其添加到您的 GROUP BY

select E.Job_ID, count(*), max(Employee_Salary) as kos, avg(Employee_Salary)
    from Employee E  
    inner join JOB D on E.Job_ID = D.Job_ID
    group by E.Job_ID, D.Functio
    order by D.Functio

否则，在排序中，您需要应用一个聚合函数，如 min()、max()、avg() 等。

Answer 3

包括D.Functio在Select和Group by

select E.Job_ID, D.Functio,
     count(*), max(Employee_Salary) as kos, avg(Employee_Salary)
from Employee E  
inner join JOB D on E.Job_ID = D.Job_ID
group by E.Job_ID, D.Functio
order by D.Functio