题解 | #获取当前薪水第二多的员工的emp_no以及其对应的薪水salary#

SELECT e.emp_no,s.salary,e.last_name,e.first_name 
FROM employees e INNER JOIN salaries s on e.emp_no=s.emp_no
WHERE salary =
(
    select max(salary) from salaries
    where salary != (select max(salary) from salaries)
);