176. Second Highest Salary

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 second highest salary is 200. If there is no second highest salary, then the query should return null.

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MySQL

# Write your MySQL query statement belowselect    max(a.Salary) as SecondHighestSalaryfrom    Employee a,    (        select            max(Salary) as Salary        from            Employee    ) bwhere    a.Salary < b.Salary;