177. 第N高的薪水
作者:互联网
编写一个 SQL 查询,获取 Employee 表中第 n 高的薪水(Salary)。
+----+--------+
| Id | Salary |
+----+--------+
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
+----+--------+
例如上述 Employee 表,n = 2 时,应返回第二高的薪水 200。如果不存在第 n 高的薪水,那么查询应返回 null。
+------------------------+
| getNthHighestSalary(2) |
+------------------------+
| 200 |
+------------------------+
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/nth-highest-salary
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CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
SET N := N-1;
RETURN (
# Write your MySQL query statement below.
# Write your MySQL query statement below
SELECT (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT N, 1)
);
END
标签:Salary,200,薪水,+------------------------+,+----+--------+,Employee,177 来源: https://www.cnblogs.com/tianyiya/p/15659399.html