Question

我有两次start_time和end_time，我希望得到start_time和end_time之间的秒数差异，意味着如果start_time = 1：1：0和end_time = 1：2：3那么我应该得到63。请告诉我应该为此申请MySQL的查询。

Answer 1

TIMESTAMPDIFF()会为您提供所需内容：

SELECT TIMESTAMPDIFF(SECOND, start_time, end_time) as timediff from `sometable` WHERE...

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

Answer 2

我会对此发表评论，但刚加入。在他的要求中，开始时间是过去的，但结果是正时间差。所以

SELECT TIMESTAMPDIFF(SECOND, start_time, end_time)...

应该是

SELECT ABS(TIMESTAMPDIFF(SECOND, start_time, end_time))...;

完整示例

SET @startDate = NOW() - INTERVAL 63 SECOND;
SET @endDate = NOW();

SELECT ABS(TIMESTAMPDIFF(SECOND, @startDate, @endDate)) AS time_difference;
-- or this
SELECT ABS(TO_SECONDS(@startDate) - TO_SECONDS(@endDate)) AS time_difference;

如何在mysql中获得时差

2 个答案: