Re: So what's null then if it's not nothing?

From: Jon Heggland <heggland_at_idi.ntnu.no>
Date: Sat, 3 Dec 2005 13:43:55 +0100
Message-ID: <MPG.1dfbb17ae0a438f7989726_at_news.ntnu.no>


In article <Vufkf.8470$N45.6648_at_newsread1.news.atl.earthlink.net>, david.cressey_at_earthlink.net says...
>
> I agree. If I were redesigning SQL from the ground up, and with the benefit
> of hindsight, I would take this route.
>
> Possibly with two column qualifiers, the reserved words KEY and OPTIONAL.
> [8<]
> The reserved word KEY means that this column is (one of) the column(s) that
> will be used to reference rows in the table.

No, that would force you to have just one key.

-- 
Jon
Received on Sat Dec 03 2005 - 13:43:55 CET

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