昨天

SELECT DATE_SUB(CURDATE(),INTERVAL 1 DAY)

https://www.w3cschool.cn/mysql/func-date-sub.html

https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html

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) | RecordDate(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 Id FROM Weather w WHERE Temperature>(
SELECT Temperature FROM Weather WHERE RecordDate=DATE_SUB(w.RecordDate,INTERVAL 1 DAY)
)