Leetcode 176 Second Highest Salary

Write a SQL query to get the second highest salary from the Employee table.

+----+--------+
| Id | Salary |
+----+--------+
| 1  | 100    |
| 2  | 200    |
| 3  | 300    |
+----+--------+

For example, given the above Employee table, the second highest salary is 200. If there is no second highest salary, then the query should return null.

如果值不存在，max()返回NULL

select max(Salary) from Employee
where Salary < (select max(Salary) from Employee)
时间： 2024-10-14 09:24:51

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