题解 | #查找在职员工自入职以来的薪水涨幅情况#
查找在职员工自入职以来的薪水涨幅情况
http://www.nowcoder.com/practice/fc7344ece7294b9e98401826b94c6ea5
select e.emp_no, s2.salary-s1.salary as growth from employees e left join salaries as s1 on e.emp_no=s1.emp_no and s1.from_date=e.hire_date inner join salaries as s2 on s1.emp_no=s2.emp_no where s2.to_date='9999-01-01' order by growth
