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 d.emp_no, m.emp_no as manager from dept_emp d, dept_manager m where d.emp_no not in (select emp_no from dept_manager) -- 先筛选非经理员工 and d.dept_no = m.dept_no -- 再判断该员工的经理号