这种题目有两种解法,方法1,采用limit实现,如下:
select emp_no,salary
from salaries
order by salary desc
limit 1,1;
方法2,如果不允许使用limit的话,可以换个思路思考,第二高也就是除了最高的之外,薪水最高的了,具体实现如下:
select e.emp_no,MAX(s.salary),e.last_name,e.first_name
from employees as e join salaries as s
on e.emp_no = s.emp_no
where s.to_date = '9999-01-01'
and s.salary<(select MAX(salary) from salaries )