MySQL中两个日期之间的差异

Question

如何以格式计算两个日期之间的差YYYY-MM-DD hh: mm: ss并以秒或毫秒为单位获取结果？

Answer 1

SELECT TIMEDIFF('2007-12-31 10:02:00','2007-12-30 12:01:01');

-- result: 22:00:59, the difference in HH:MM:SS format

SELECT TIMESTAMPDIFF(SECOND,'2007-12-30 12:01:01','2007-12-31 10:02:00'); 

-- result: 79259  the difference in seconds

因此，您可以TIMESTAMPDIFF为您的目的使用。

Answer 2

使用DATEDIFF获取以天为单位的日期差

SELECT DATEDIFF('2010-10-08 18:23:13', '2010-09-21 21:40:36') AS days;

+------+

| days |

+------+

|   17 |

+------+

Answer 3

SELECT TIMESTAMPDIFF(HOUR,NOW(),'2013-05-15 10:23:23')

   calculates difference in hour.(for days--> you have to define day replacing hour

SELECT DATEDIFF('2012-2-2','2012-2-1')

SELECT TO_DAYS ('2012-2-2')-TO_DAYS('2012-2-1')