获取薪水第二多的员工的emp_no及对应的薪水salary

select e.emp_no,s.salary,e.last_name,e.first_name from salaries s join employees e on s.emp_no=e.emp_no where s.salary=(select max(s2.salary) from salaries s2 where s2.salary<(select max(salary) from salaries where to_date='9999-01-01') and s2.to_date='9999-01-01')