题解 | #获取每个部门中当前员工薪水最高的相关信息#

select dept_no,
emp_no,
salary as maxSalary
from
(
select
    d.dept_no as dept_no,
    d.emp_no as emp_no,
    salary,
    row_number() over (partition by dept_no order by salary desc) as ranking
from
    dept_emp d
    left join salaries s on d.emp_no = s.emp_no
)tmp
where ranking = 1