leetcode数据库sql之Rising Temperature

leetcode原文引用：

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 |
+----+

我的sql语句如下：

select t2.id from Weather t1 
inner join Weather t2 on 
t1.Temperature < t2.temperature
and 
to_days(t1.Date) = to_days(t2.Date)-1

注意：原来忘了使用to_days函数，导致提交一直说有错误，必须要加上to_days函数！！