database/_176.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 second highest salary is 200. If there is no second highest salary, then the query should return null.

-- # Write your MySQL query statement below
select max(Salary) as SecondHighestSalary from Employee where Salary < (select max(Salary) from Employee)