In payroll analysis, identifying the runner-up in salary tiers is a common task. You are tasked with finding the second highest distinct salary from the Employee table.
Write an SQL query to report the second highest salary from the Employee table. If there is no second highest salary, the query should report null.
| id(INTEGER) | salary(INTEGER) |
|---|---|
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 4 | 300 |
| 5 | 250 |
| 6 | 50 |
| SecondHighestSalary(INTEGER) |
|---|
| 250 |