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
用row_number排序取出最大值
select
dept_no
,emp_no
,salary as maxSalary
from
(
select dept_no,de.emp_no,salary
,row_number() over (partition by dept_no order by salary desc) as rk
from dept_emp de
left join salaries s on de.emp_no = s.emp_no
) as a
where rk=1
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