leetcode-SQL-197. 上升的温度

+---------------+---------+
| Column Name   | Type    |
+---------------+---------+
| id            | int     |
| recordDate    | date    |
| temperature   | int     |
+---------------+---------+
id 是这个表的主键
该表包含特定日期的温度信息

输入：
Weather 表：
+----+------------+-------------+
| id | recordDate | Temperature |
+----+------------+-------------+
| 1  | 2015-01-01 | 10          |
| 2  | 2015-01-02 | 25          |
| 3  | 2015-01-03 | 20          |
| 4  | 2015-01-04 | 30          |
+----+------------+-------------+
输出：
+----+
| id |
+----+
| 2  |
| 4  |
+----+
解释：
2015-01-02 的温度比前一天高（10 -> 25）
2015-01-04 的温度比前一天高（20 -> 30）

select a.id
from Weather as a
inner join Weather as b
on datediff(a.recordDate,b.recordDate)=1
where a.temperature>b.temperature;