Write a SQL query to get the nth highest salary from the Employee
table.
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
For example, given the above Employee table, the nth highest salary where n = 2 is 200
. If there is no nth highest salary, then the query should return null
.
+------------------------+ | getNthHighestSalary(2) | +------------------------+ | 200 | +------------------------+
1 CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT 2 BEGIN 3 SET N = N - 1; 4 RETURN ( 5 # Write your MySQL query statement below. 6 7 SELECT DISTINCT Salary 8 FROM Employee 9 ORDER BY Salary DESC 10 LIMIT N, 1 11 ); 12 END