nth highest salary from the Employee
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
nth highest salary where n = 2 is 200. If there is no nth highest salary, then the query should return null.
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CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
DECLARE M INT;
SET M=N-1;
RETURN (
# Write your MySQL query statement below.
SELECT DISTINCT Salary FROM Employee ORDER by Salary DESC LIMIT M,1
);
END
