题目链接：https://leetcode-cn.com/problems/department-top-three-salaries/

sql架构

Create table If Not Exists Employee (id int, name varchar(255), salary int, departmentId int)
Create table If Not Exists Department (id int, name varchar(255))
Truncate table Employee
insert into Employee (id, name, salary, departmentId) values ('1', 'Joe', '85000', '1')
insert into Employee (