题解 | 薪水第二多的员工的以及其对应的薪水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 emp_no,salary from (select emp_no,salary, dense_rank()over(order by salary desc) rk from salaries) pai where pai.rk=2
窗口函数+子查询