编写一个 SQL 查询,获取 Employee
表中第二高的薪水(Salary) 。
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
例如上述 Employee
表,SQL查询应该返回 200
作为第二高的薪水。如果不存在第二高的薪水,那么查询应返回 null
。
+---------------------+ | SecondHighestSalary | +---------------------+ | 200 | +---------------------+
# Write your MySQL query statement below select IFNULL((select distinct(Salary) from Employee order by Salary desc limit 1,1),null) as SecondHighestSalary
原文地址:https://www.cnblogs.com/JAYPARK/p/10348920.html
时间: 2024-10-09 23:43:06