Second Highest Salary

Question

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                 |
+---------------------+

Tags

• SQL
• MAX function

Thought

Use MAX function here:

For MAX(list), if list is empty, MAX function return null. Otherwise, it return the maximum item in the list.

Code

-- Write your MySQL query statement below

SELECT MAX( Salary) AS SecondHighestSalary
FROM Employee
WHERE Salary < ( SELECT MAX( Salary) FROM Employee );