197. 上升的温度

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题目

给定一个 Weather 表，编写一个 SQL 查询，来查找与之前（昨天的）日期相比温度更高的所有日期的 Id。

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+---------+------------------+------------------+
| Id(INT) | RecordDate(DATE) | Temperature(INT) |
+---------+------------------+------------------+
|       1 |       2015-01-01 |               10 |
|       2 |       2015-01-02 |               25 |
|       3 |       2015-01-03 |               20 |
|       4 |       2015-01-04 |               30 |
+---------+------------------+------------------+

例如，根据上述给定的 Weather 表格，返回如下 Id:

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+----+
| Id |
+----+
|  2 |
|  4 |
+----+

解法

解法一：

Java

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# Write your MySQL query statement below
SELECT w1.Id FROM Weather w1, Weather w2 WHERE w1.Temperature > w2.Temperature AND TO_DAYS(w1.RecordDate) = TO_DAYS(w2.RecordDate) + 1;

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