我收到错误 ORA-00979: not a GROUP BY 表达式

【问题标题】：i got error ORA-00979: not a GROUP BY expression我收到错误 ORA-00979: not a GROUP BY 表达式
【发布时间】：2021-10-26 22:27:23
【问题描述】：

我收到错误 ORA-00979 并执行以下查询：

SELECT d.department_name "department name",
       e.job_id "job title",
       SUM(e.salary) "monthly cost", 
       GROUPING(d.department_id) "Department ID Used",
       GROUPING(e.job_id) "Job ID Used"
FROM   employees e
       JOIN departments d
       ON e.department_id=d.department_id
GROUP BY cube(d.department_name, e.job_id)
ORDER BY d.department_name, e.job_id

查询有问题吗？

【问题讨论】：

标签： sql oracle ora-00979

【解决方案1】：

您正在使用GROUPING(d.department_id)，但department_id 不在GROUP BY 子句中。

您可以将其添加到GROUP BY 子句中：

SELECT d.department_name "department name",
       e.job_id "job title",
       SUM(e.salary) "monthly cost",
       GROUPING(d.department_id) "Department ID Used",
       GROUPING(e.job_id) "Job ID Used"
FROM   employees e
       JOIN departments d
       ON e.department_id=d.department_id
GROUP BY cube(d.department_name, d.department_id, e.job_id)
ORDER BY d.department_name, e.job_id

db小提琴here

【讨论】：

感谢您的帮助，现在我可以运行查询了