How to calculate hours, minutes or seconds between two time values?
If you have time values, just subtract them, and you'll get the interval length in seconds:
select end_time - start_time
If you want to get minutes, divide the result by 60, and if you want hours by 3600.
If you have timestamps instead of times, the difference is in days, so you if you want seconds, you need to multiply the value by 60 * 60 * 24.
Do you find this FAQ incorrect or incomplete? Please e-mail
needs to be changed. To ensure quality, each change is checked by our editors (and often tested on live Firebird
databases), before it enters the main FAQ database. If you desire so, the
changes will be credited to your name. To learn more, visit our add content
If you are a commercial tool maker and your tool features a great way to handle
the issue written about in this FAQ, please check out our advertisement
All contents are copyright © 2007-2017 FirebirdFAQ.org unless otherwise stated in the text.