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 a.emp_no as emp_no,
b.emp_no as manager
from
(
select
*
from
dept_emp
) a
left join (
select
*
from
dept_manager
) b
on a.dept_no=b.dept_no
where a.emp_no <> b.emp_no
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