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 * from ( 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))t where t.salary=( select max(t.salary) as sec_salary from ( 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))t )