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 e.emp_no,m.emp_no manager from dept_emp e inner join dept_manager m on e.dept_no = m.dept_no where e.to_date ='9999-01-01'and m.to_date ='9999-01-01'and e.emp_no != m.emp_no 思路如sql所示，记住当前筛选
