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
select em.emp_no emp_no,mg.emp_no manager from dept_emp as em inner join dept_manager as mg on em.dept_no=mg.dept_no where em.emp_no !=mg.emp_no