Description
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 |
+------------------------+
Solutions
1. Limit
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
DECLARE M INT DEFAULT N-1;
-- DECLARE M INT;
-- SET M=N-1;
RETURN (
# Write your MySQL query statement below.
SELECT ( SELECT DISTINCT Salary
FROM Employee
ORDER by Salary DESC
-- LIMIT 1 offset M
LIMIT M, 1
)
);
END
-- 14/14 cases passed (184 ms)
-- Your runtime beats 97.82 % of mysql submissions
-- Your memory usage beats 100 % of mysql submissions (0B)