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 n.emp_no,(n.salary-t.start_salary) growth
from (select emp_no,salary from salaries where to_date = '9999-01-01') n
join (select e.emp_no,s.salary start_salary
from employees e
join salaries s
on e.emp_no = s.emp_no and e.hire_date = s.from_date) t
on n.emp_no = t.emp_no
order by growth;
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