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 |
select ifnull((
select distinct `Salary` from `Employee` order by `Salary` desc limit 1,1
), null) as SecondHighestSalary;If you have a better solution, you can star and fork Leetcode-database-problem then create a pull request.