Leetcode: Second Highest Salary

Second Highest Salary

Similar Problems:

• Review: SQL Problems
• Tag: #sql

Write a SQL query to get the second highest salary from the Employee table.

+----+--------+
| Id | Salary |
+----+--------+
| 1  | 100    |
| 2  | 200    |
| 3  | 300    |
+----+--------+

For example, given the above Employee table, the query should return 200 as the second highest salary. If there is no second highest salary, then the query should return null.

+---------------------+
| SecondHighestSalary |
+---------------------+
| 200                 |
+---------------------+

Github: code.dennyzhang.com

Credits To: leetcode.com

Leave me comments, if you have better ways to solve.

## Blog link: https://code.dennyzhang.com/second-highest-salary
select ifnull((
       select Salary from Employee
       group by Salary order by Salary desc limit 1,1), null) as SecondHighestSalary