Re: Is Ingres yet relational?

From: Leandro Guimaraens Faria Corsetti Dutra <leandro_at_dutra.fastmail.fm>
Date: Tue, 25 May 2004 19:25:28 -0300
Message-ID: <pan.2004.05.25.22.25.27.560441_at_dutra.fastmail.fm>


Em Tue, 25 May 2004 13:07:57 -0700, --CELKO-- escreveu:

> I believe QUEL was dropped just before CA bought Ingres.

        You believe it wrong. QUEL is still mentioned at current CA documentation. That's quite understandable, CA seems intent on hiding it away...

> I still have an old QUEL manual somewhere.

        You can get it from the Support section on http://ca.com./

> When SQL added subquery expresions and
> derived tables, it got the same expressive power as QUEL.

        Being relational is a huge advantage, no only in expressiveness but also simplicity, and therefore code size, optmisability...

> With the additon of CASE expressions, SQL actually is ahead.

        Sounds like a trivial addition now that Ingres is (to be) free software.

        But then current Ingres QUEL accepts NULLs, duplicates... what a pity. Perhaps better to stick to Dataphor, which has user-defined types too.

        It seems a shame that such beautiful software has died on the free software side (PostgreSQL) and been corrupted in the proprietary side (CA Ingres).

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Received on Wed May 26 2004 - 00:25:28 CEST

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