LeetCode197

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 | +----+

SELECT w1.Id
FROM Weather w1,Weather w2
WHERE w1.Temperature > w2.Temperature AND
TO_DAYS(w1.Date)-TO_DAYS(w2.Date)=1;