题解 | #查找在职员工自入职以来的薪水涨幅情况#

答案:

select e.emp_no, (s2.salary-s1.salary) growth
from employees e
join salaries s1 on e.emp_no=s1.emp_no and e.hire_date=s1.from_date //入职
join salaries s2 on e.emp_no=s2.emp_no and s2.to_date='9999-01-01'  //在职最后一条工资记录
order by growth