题解 | 薪水第二多的员工的emp_no及对应的salary
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/8d2c290cc4e24403b98ca82ce45d04db
select a.emp_no,a.salary from (select emp_no,salary,dense_rank()over(order by salary desc) r from salaries) a where a.r=2 order by a.emp_no