On Mon, Aug 28, 2006 at 04:18:12PM +0200, Bjørn T Johansen wrote:
> On Mon, 28 Aug 2006 07:20:02 -0600 Michael Fuhr <mike@fuhr.org> wrote:
> > select extract(epoch from sum(Til - Fra)) * 1000.0 ...
>
> Do you know if this is supported on older versions of PostgreSQL
> as well? (eg. 7.4.x)
Yes, it is; I think it's worked since ancient times. See "Date/Time
Functions and Operators" in the "Functions and Operators" chapter
of the documentation for whatever versions you need. Here's a link
for 7.4:
http://www.postgresql.org/docs/7.4/interactive/functions-datetime.html
--
Michael Fuhr