select t1.emp_no, (t1.salary - s.salary) as growth from ( select e.emp_no, e.hire_date, s.salary from employees e join salaries s on e.emp_no = s.emp_no where s.to_date = '9999-01-01' ) t1 join salaries s on t1.emp_no = s.emp_no and t1.hire_date = s.from_date order by growth; 通过...