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