g0101_0200.s0176_second_highest_salary.readme.md Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of leetcode-in-java21 Show documentation
Show all versions of leetcode-in-java21 Show documentation
Java-based LeetCode algorithm problem solutions, regularly updated
176\. Second Highest Salary
Medium
SQL Schema
Table: `Employee`
+-------------+------+
| Column Name | Type |
+-------------+------+
| id | int |
| salary | int |
+-------------+------+
id is the primary key column for this table.
Each row of this table contains information about the salary of an employee.
Write an SQL query to report the second highest salary from the `Employee` table. If there is no second highest salary, the query should report `null`.
The query result format is in the following example.
**Example 1:**
**Input:**
Employee table:
+----+--------+
| id | salary |
+----+--------+
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
+----+--------+
**Output:**
+---------------------+
| SecondHighestSalary |
+---------------------+
| 200 |
+---------------------+
**Example 2:**
**Input:**
Employee table:
+----+--------+
| id | salary |
+----+--------+
| 1 | 100 |
+----+--------+
**Output:**
+---------------------+
| SecondHighestSalary |
+---------------------+
| null |
+---------------------+