HH:MM:SS格式的SQLite时差计算 [英] SQLite time difference calculations in HH:MM:SS format
本文介绍了HH:MM:SS格式的SQLite时差计算的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在SQLite中以HH:MM:SS格式计算时差?
How to calculate time difference in HH:MM:SS format in SQLite?
SELECT time(strftime('%s','2017-11-01 22:25:28')-strftime('%s','2017-11-01'));
给我:
12:00:00
12:00:00
和
SELECT datetime(strftime('%s','2017-11-01 22:25:28')-strftime('%s','2017-11-01'));
给我:
-4492-12-04 12:00:00
-4492-12-04 12:00:00
推荐答案
As documented in the documentation, numbers are interpreted as Julian date numbers by default.
如果您的值是秒数,则必须将其解释为秒数,即Unix时间戳:
If your value is a number of seconds, you have to interpret it as a number of seconds, i.e., as a Unix timestamp:
SELECT time(strftime('%s','2017-11-01 22:25:28') - strftime('%s','2017-11-01'), 'unixepoch');
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