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 | +----+
需求：查询今天气温比前一天的高的日期
CREATE TABLE Weather(
Id TINYINT UNSIGNED,
Date date,
Temperature TINYINT
)ENGINE=MyISAM CHARSET=utf8;
SELECT t1.Id
FROM Weather t1
WHERE t1.Temperature>(SELECT t2.Temperature
FROM Weather t2
WHERE t2.Date=ADDDATE(t1.Date,INTERVAL -1 DAY))
[LeetCode]-DataBase-Rising Temperature
原文：http://www.cnblogs.com/lianliang/p/5303046.html