题解 | #获取所有非manager员工当前的薪水情况#
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
-- find the maximum salary in each department
SELECT
de.dept_no, de.emp_no, salary as maxSalary
from dept_emp de
join salaries using(emp_no)
where salary = (
select
max(salary)
from salaries
join dept_emp using(emp_no)
where dept_no = de.dept_no)
-- 限制subquery的检索范围：只在当前员工所在的部门里找最高薪水
