第二高的薪水
难度 简单
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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
Language: MySQL
# Write your MySQL query statement below
select (select distinct salary from Employee order by salary desc limit 1,1) as SecondHighestSalary ;