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+---
+comments: true
+difficulty: 中等
+edit_url: https://github.com/doocs/leetcode/edit/main/solution/3300-3399/3338.Second%20Highest%20Salary%20II/README.md
+tags:
+ - 数据库
+---
+
+
+
+# [3338. Second Highest Salary II 🔒](https://leetcode.cn/problems/second-highest-salary-ii)
+
+[English Version](/solution/3300-3399/3338.Second%20Highest%20Salary%20II/README_EN.md)
+
+## 题目描述
+
+
+
+Table: employees
+
+
++------------------+---------+
+| Column Name | Type |
++------------------+---------+
+| emp_id | int |
+| salary | int |
+| dept | varchar |
++------------------+---------+
+emp_id is the unique key for this table.
+Each row of this table contains information about an employee including their ID, name, manager, salary, department, start date, and building assignment.
+
+
+Write a solution to find the employees who earn the second-highest salary in each department. If multiple employees have the second-highest salary, include all employees with that salary.
+
+Return the result table ordered by emp_id in ascending order.
+
+The result format is in the following example.
+
+
+Example:
+
+
+
Input:
+
+
employees table:
+
+
++--------+--------+-----------+
+| emp_id | salary | dept |
++--------+--------+-----------+
+| 1 | 70000 | Sales |
+| 2 | 80000 | Sales |
+| 3 | 80000 | Sales |
+| 4 | 90000 | Sales |
+| 5 | 55000 | IT |
+| 6 | 65000 | IT |
+| 7 | 65000 | IT |
+| 8 | 50000 | Marketing |
+| 9 | 55000 | Marketing |
+| 10 | 55000 | HR |
++--------+--------+-----------+
+
+
+
Output:
+
+
++--------+-----------+
+| emp_id | dept |
++--------+-----------+
+| 2 | Sales |
+| 3 | Sales |
+| 5 | IT |
+| 8 | Marketing |
++--------+-----------+
+
+
+
Explanation:
+
+
+ - Sales Department:
+
+
+ - Highest salary is 90000 (emp_id: 4)
+ - Second-highest salary is 80000 (emp_id: 2, 3)
+ - Both employees with salary 80000 are included
+
+
+ - IT Department:
+
+ - Highest salary is 65000 (emp_id: 6, 7)
+ - Second-highest salary is 55000 (emp_id: 5)
+ - Only emp_id 5 is included as they have the second-highest salary
+
+
+ - Marketing Department:
+
+ - Highest salary is 55000 (emp_id: 9)
+ - Second-highest salary is 50000 (emp_id: 8)
+ - Employee 8 is included
+
+
+ - HR Department:
+
+ - Only has one employee
+ - Not included in the result as it has fewer than 2 employees
+
+
+
+
+
Table: employees
+
+
++------------------+---------+
+| Column Name | Type |
++------------------+---------+
+| emp_id | int |
+| salary | int |
+| dept | varchar |
++------------------+---------+
+emp_id is the unique key for this table.
+Each row of this table contains information about an employee including their ID, name, manager, salary, department, start date, and building assignment.
+
+
+Write a solution to find the employees who earn the second-highest salary in each department. If multiple employees have the second-highest salary, include all employees with that salary.
+
+Return the result table ordered by emp_id in ascending order.
+
+The result format is in the following example.
+
+
+Example:
+
+
+
Input:
+
+
employees table:
+
+
++--------+--------+-----------+
+| emp_id | salary | dept |
++--------+--------+-----------+
+| 1 | 70000 | Sales |
+| 2 | 80000 | Sales |
+| 3 | 80000 | Sales |
+| 4 | 90000 | Sales |
+| 5 | 55000 | IT |
+| 6 | 65000 | IT |
+| 7 | 65000 | IT |
+| 8 | 50000 | Marketing |
+| 9 | 55000 | Marketing |
+| 10 | 55000 | HR |
++--------+--------+-----------+
+
+
+
Output:
+
+
++--------+-----------+
+| emp_id | dept |
++--------+-----------+
+| 2 | Sales |
+| 3 | Sales |
+| 5 | IT |
+| 8 | Marketing |
++--------+-----------+
+
+
+
Explanation:
+
+
+ - Sales Department:
+
+
+ - Highest salary is 90000 (emp_id: 4)
+ - Second-highest salary is 80000 (emp_id: 2, 3)
+ - Both employees with salary 80000 are included
+
+
+ - IT Department:
+
+ - Highest salary is 65000 (emp_id: 6, 7)
+ - Second-highest salary is 55000 (emp_id: 5)
+ - Only emp_id 5 is included as they have the second-highest salary
+
+
+ - Marketing Department:
+
+ - Highest salary is 55000 (emp_id: 9)
+ - Second-highest salary is 50000 (emp_id: 8)
+ - Employee 8 is included
+
+
+ - HR Department:
+
+ - Only has one employee
+ - Not included in the result as it has fewer than 2 employees
+
+
+
+
+