leetcode177 Nth Highest Salary-zh
# 177. 第N高的薪水 (opens new window)
English Version (opens new window)
# 题目描述
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 | +------------------------+
# 解法
# SQL
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
SET N = N - 1;
RETURN (
# Write your MySQL query statement below.
SELECT (
SELECT DISTINCT Salary
FROM Employee
ORDER BY Salary DESC
LIMIT 1 OFFSET N
)
);
END
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编辑 (opens new window)
上次更新: 2021/10/30, 12:58:38