Java版LeetCode176. 第二高的薪水
题目
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 |
题解
sql
SELECT MAX(`Salary`) AS `SecondHighestSalary`
FROM `Employee`
WHERE `Salary` < (SELECT MAX(`t`.`SALARY`) FROM `Employee` `t`)SELECT MAX(`Salary`) AS `SecondHighestSalary`
FROM `Employee`
WHERE `Salary` < (SELECT MAX(`t`.`SALARY`) FROM `Employee` `t`)1
2
3
2
3