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Mysql重点难题（2）汇总

2022-07-02 04:48:00 【且行且安~】

按照dept_no进行汇总，属于同一个部门的emp_no按照逗号进行连接，结果给出dept_no以及连接出的结果employees

CREATE TABLE `dept_emp` (
`emp_no` int(11) NOT NULL,
`dept_no` char(4) NOT NULL,
`from_date` date NOT NULL,
`to_date` date NOT NULL,
PRIMARY KEY (`emp_no`,`dept_no`));
输出格式

dept_no	employees
d001	10001,10002
d002	10006
d003	10005
d004	10003,10004
d00

原网站

版权声明
本文为[且行且安~]所创，转载请带上原文链接，感谢
https://blog.csdn.net/qq_20412595/article/details/125567976

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当前位置：网站首页>Mysql重点难题（2）汇总

Mysql重点难题（2）汇总

1、按照dept_no进行汇总

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