# ---
# title: 184. Department Highest Salary
# id: problem184
# author: Tian Jun
# date: 2020-10-31
# difficulty: Medium
# categories: 
# link: <https://leetcode.com/problems/department-highest-salary/description/>
# hidden: true
# ---
# 
# The `Employee` table holds all employees. Every employee has an Id, a salary,
# and there is also a column for the department Id.
# 
#     
#     
#     +----+-------+--------+--------------+
#     | Id | Name  | Salary | DepartmentId |
#     +----+-------+--------+--------------+
#     | 1  | Joe   | 70000  | 1            |
#     | 2  | Jim   | 90000  | 1            |
#     | 3  | Henry | 80000  | 2            |
#     | 4  | Sam   | 60000  | 2            |
#     | 5  | Max   | 90000  | 1            |
#     +----+-------+--------+--------------+
#     
# 
# The `Department` table holds all departments of the company.
# 
#     
#     
#     +----+----------+
#     | Id | Name     |
#     +----+----------+
#     | 1  | IT       |
#     | 2  | Sales    |
#     +----+----------+
#     
# 
# Write a SQL query to find employees who have the highest salary in each of the
# departments. For the above tables, your SQL query should return the following
# rows (order of rows does not matter).
# 
#     
#     
#     +------------+----------+--------+
#     | Department | Employee | Salary |
#     +------------+----------+--------+
#     | IT         | Max      | 90000  |
#     | IT         | Jim      | 90000  |
#     | Sales      | Henry    | 80000  |
#     +------------+----------+--------+
#     
# 
# Explanation:
# 
# Max and Jim both have the highest salary in the IT department and Henry has
# the highest salary in the Sales department.
# 
# 
## @lc code=start
using LeetCode

## add your code here:
## @lc code=end
