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Date: Mon, 17 Mar 2003 15:26:36 +0100
From: Christoph Haller <ch@rodos.fzk.de>
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To: pgsql-sql@postgresql.org
Cc: jasiek@klaster.net
Subject: Re: Formatting intervals..
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>
> >>It doesn't make sense. You don't have whole date, so how long should

> >>month be? 28? 29? 30? 31?
> >>
> >
> > It does. As long the months between January and October are.
> > So
> > select age ('10-10-1999'::timestamp , '1-1-1999'::timestamp ) ;
> >       age
> > ---------------
> >  9 mons 9 days
> > (1 row)
> >
> Your example above is related to some real date, so we know how many
> days each month have. When using interval - we don't know how many
days
> each month should have. beacuse interval is unrelated to date.
>
Sorry, but it wasn't my example, it was Mallah's.
But of course you're right on "interval is unrelated to date".

Regards, Christoph