题解 | #获取每个部门中当前员工薪水最高的相关信息#
获取每个部门中当前员工薪水最高的相关信息
https://www.nowcoder.com/practice/4a052e3e1df5435880d4353eb18a91c6
with t1 as(
select de.emp_no, dept_no, salary
from dept_emp de
left join salaries sa
on de.emp_no = sa.emp_no
),
t2 as (
select *,
row_number() over (partition by dept_no order by salary desc) as rk
from t1
)
select dept_no, emp_no, salary
from t2
where rk = 1
order by dept_no
先进行关联，再用窗口函数
查看2道真题和解析
