如图
获取当前薪水第二多的员工的emp_no以及其对应的薪水salary
https://www.nowcoder.com/practice/c1472daba75d4635b7f8540b837cc719
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 and s.salary = (select max(salary) from salaries where salary<(select max(salary) from salaries));