Re: Guessing?
From: David BL <davidbl_at_iinet.net.au>
Date: Sun, 1 Jun 2008 18:22:52 -0700 (PDT)
Message-ID: <5b72eb53-746f-4879-b7c9-152ffc13989d_at_x19g2000prg.googlegroups.com>
Date: Sun, 1 Jun 2008 18:22:52 -0700 (PDT)
Message-ID: <5b72eb53-746f-4879-b7c9-152ffc13989d_at_x19g2000prg.googlegroups.com>
On May 31, 6:59 pm, paul c <toledoby..._at_ac.ooyah> wrote:
> David BL wrote:
>
> ... [On a
>
> > side note - it seems to make sense to allow mathematically defined
> > relations as read only first class citizens so that selection is just
> > a join].
> > ...
>
> What else could it be?
It's a language issue. As an example, in tutorial D a selection may be written as
R WHERE x < 10
instead of
R JOIN x < 10
This gives me the impression that the relation x<10 isn't treated as a first class citizen. Received on Mon Jun 02 2008 - 03:22:52 CEST