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
http://www.nowcoder.com/practice/4a052e3e1df5435880d4353eb18a91c6
select tt.dept_no,tt.emp_no,tt.salary from
(select d.dept_no,d.emp_no,s.salary,
dense_rank() over (partition by d.dept_no order by s.salary desc) as rank
from dept_emp as d join salaries as s
on d.emp_no=s.emp_no
and s.to_date='9999-01-01'
and d.to_date='9999-01-01') as tt
where tt.rank=1
order by tt.dept_no
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