Re: fomatting an interval (resend)

On Wed, May 14, 2003 at 10:12:41AM -0700, Forest Wilkinson wrote:

> >Here is one consistent conversion that will show you the number of seconds 
> >without anything else:
> >
> >select round(extract(epoch from finish) - extract(epoch from start)) from timetable;
> 
> Hmm.  The postgres 7.3 docs give me the impression that extract() will
> return one field of a multi-field value, such as '4 days' from '2
> years 4 days 15:01'.  Experimenting in psql seems to prove this.  For
> example:

Extracting(epoch) from an interval is a special case.  It returns the
total number of seconds in the interval.  Note that it is quite
different from extracting(epoch) from a timestamp.

-- 
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"Si quieres ser creativo, aprende el arte de perder el tiempo"