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 |+---------------------+
Solution:
SELECT ( SELECT salary FROM employee ORDER BY salary LIMIT 1, 1 ) AS SecondHighestSalary;
作者:lconcise
链接:https://www.jianshu.com/p/66ddae52d788