Re: The job of a relational DBMS
From: Ben Finney <bignose+hates-spam_at_benfinney.id.au>
Date: Wed, 09 Dec 2009 11:38:15 +1100
Message-ID: <87vdghdls8.fsf_at_benfinney.id.au>
joel garry <joel-garry_at_home.com> writes:
Date: Wed, 09 Dec 2009 11:38:15 +1100
Message-ID: <87vdghdls8.fsf_at_benfinney.id.au>
joel garry <joel-garry_at_home.com> writes:
> On Nov 30, 8:52 pm, Ben Finney <bignose+hates-s..._at_benfinney.id.au>
> wrote:
> > Hmm. I'm not sure it's right to say the result would not *be* a
> > relation; but I certainly take the point about ‘ORDER BY’ requesting
> > order be imposed on an orderless relation.
>
> Should anyone care, I ran across this while meditating upon Chris Date
> giving a seminar in Dallas next month:
[…]
Yes, that about covers it. While ‘ORDER BY’ produces something that isn't a relation, it clearly is an operation useful enough that it belongs in a relational DBMS.
-- \ “If you do not trust the source do not use this program.” | `\ —Microsoft Vista security dialogue | _o__) | Ben FinneyReceived on Tue Dec 08 2009 - 18:38:15 CST