[LeetCode] 177. Nth Highest Salary

ProblemWrite a SQL query to get the nth highest salary from the Employee table.IdSalary110022003300For 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)200SolutionCREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGIN SET N=N-1; RETURN ( SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET N );END