题解 | #获取所有非manager的员工emp_no#
获取所有非manager的员工emp_no
http://www.nowcoder.com/practice/32c53d06443346f4a2f2ca733c19660c
SELECT e.emp_no
FROM employees e
left join dept_manager d
on e.emp_no=d.emp_no
FROM employees e
left join dept_manager d
on e.emp_no=d.emp_no
WHERE dept_no is NULL
