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 |
+———————+
来源:力扣(LeetCode)
代码1:
# Write your MySQL query statement below
select (select Salary from Employee where Salary < (select Salary from Employee order by Salary DESC limit 1) order by Salary DESC limit 1) as SecondHighestSalary
代码2:
# Write your MySQL query statement below
select (select distin
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