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From "RPost" <rp0...@pacbell.net>
Subject Re: INTERSECT and EXCEPT Design
Date Tue, 01 Mar 2005 00:49:57 GMT
Looks good but the 'Back to Derby Papers' link at the bottom is broken: it
has one two many 'papers' directories'.
----- Original Message -----
From: "Jean T. Anderson" <jta@bristowhill.com>
To: "Derby Development" <derby-dev@db.apache.org>
Sent: Monday, February 28, 2005 3:47 PM
Subject: Re: INTERSECT and EXCEPT Design


> Jack Klebanoff wrote:
> > RPost wrote:
> >> ...
> >> Anyway, I think you meant to compare UNION (or UNION ALL) and
> >> INTERSECT here (as you did EXCEPT/INTERSECT below this) to illustrate
> >> the higher precedence of INTERSECT.
> >>
> > Yes. I included the UNION/UNION ALL example because it is important to
> > get the associativity right even in the UNION case. I have updated my
> > paper (attached) to say so explicitly, and include an example with UNION
> > and EXCEPT.
> ...
> It's now here:
> http://incubator.apache.org/derby/papers/Intersect-design.html
>
>   -jean


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