Thread: Subtracting time fields

Hello all,

I have two fields in my database access_time and release_time.....I
would like to calculate the "duration" between these two values, but
can't figure out what to do.  

I've tried something like this but it doesn't work:

select access_time, release_time, time(access_time) - time(release_time)
as duration from mastertbl limit 10

Any suggestions?

Thanks,
Kevin
-- 
Kevin Old <kold@carolina.rr.com>

On Fri, Nov 01, 2002 at 17:05:26 -0500, Kevin Old <kold@carolina.rr.com> wrote:
> Hello all,
> 
> I have two fields in my database access_time and release_time.....I
> would like to calculate the "duration" between these two values, but
> can't figure out what to do.  
> 
> I've tried something like this but it doesn't work:
> 
> select access_time, release_time, time(access_time) - time(release_time)
> as duration from mastertbl limit 10

You should be able to just subtract release_time from access_time without
trying to call the time function. The type of the difference will be
an interval.