[LeetCode][SQL]Rising Temperature

Rising Temperature

Given a Weather table, write a SQL query to find all dates' Ids with higher temperature compared to its previous (yesterday's) dates.

+---------+------------+------------------+
| Id(INT) | Date(DATE) | Temperature(INT) |
+---------+------------+------------------+
|       1 | 2015-01-01 |               10 |
|       2 | 2015-01-02 |               25 |
|       3 | 2015-01-03 |               20 |
|       4 | 2015-01-04 |               30 |
+---------+------------+------------------+
For example, return the following Ids for the above Weather table:
+----+
| Id |
+----+
|  2 |
|  4 |
+----+
https://leetcode.com/problems/rising-temperature/




 

 

之前交了几次都没加TO_DAYS函数,我错了,我不该懒得装MySQL。

select A.Id from Weather A where A.Temperature > (select B.Temperature from Weather B where TO_DAYS(A.Date) - 1 = TO_DAYS(B.Date))

 

posted @ 2015-05-16 16:30  `Liok  阅读(393)  评论(0编辑  收藏  举报