题解 | #获取所有员工当前的manager#
获取所有员工当前的manager
https://www.nowcoder.com/practice/e50d92b8673a440ebdf3a517b5b37d62
** 简单思路 **
select de.emp_no, dm.emp_no as manager from dept_emp as de inner join dept_manager as dm on de.dept_no = dm.dept_no and de.emp_no not in (select emp_no from dept_manager)