MySQL中两个日期之间的差异

Question

如何计算两个日期之间的差异,格式YYYY-MM-DD hh: mm: ss和以秒或毫秒获得结果？

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

所以,你可以TIMESTAMPDIFF用于你的目的.

Answer 2

如果您正在使用DATE列(或者可以将它们转换为日期列),请尝试DATEDIFF(),然后乘以24小时,60分钟,60秒(因为DATEDIFF以天为单位返回diff).来自MySQL:

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html

例如:

mysql> SELECT DATEDIFF('2007-12-31 23:59:59','2007-12-30 00:00:00') * 24*60*60

Answer 3

使用DATEDIFF获取日期差异

SELECT DATEDIFF('2010-10-08 18:23:13', '2010-09-21 21:40:36') AS days;
+------+
| days |
+------+
|   17 |
+------+

要么

请参阅以下链接 MySql在两个时间戳之间的差异天数？

Answer 4

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')