题解 | #获取当前薪水第二多的员工的emp_no以及其对

- 取最大的薪水并把它排除，之后再去取最大的薪水，即是第二大的薪水

select emp_no,salary,last_name,first_name
from employees a
left join salaries b
using(emp_no)
where salary = (select max(salary)
from salaries
where salary != (
select max(salary)
from salaries)
)