题解 | #获取所有员工当前的manager#
获取所有员工当前的manager
http://www.nowcoder.com/practice/e50d92b8673a440ebdf3a517b5b37d62
select e.emp_no,m.emp_no manager
from dept_emp e left join dept_manager m on e.dept_no=m.dept_no
from dept_emp e left join dept_manager m on e.dept_no=m.dept_no
where e.emp_no not in(m.emp_no)
经典
