[LeetCode] Second Highest Salary

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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                 |
+---------------------+
# Write your mysql query statement below
SELECT MAX(Salary) AS SecondHighestSalary FROM Employee WHERE Salary < (SELECT MAX(Salary) FROM Employee);
# 1272 ms

 

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