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_e.emp_no AS emp_no, d_m.emp_no AS manager FROM dept_emp d_e LEFT JOIN dept_manager d_m USING(dept_no) WHERE d_e.emp_no <> d_m.emp_no