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

From: FrankHamersley <FrankHamersleyZat_at_hotmail.com>
Date: Wed, 23 Nov 2005 10:59:48 GMT
Message-ID: <EYXgf.1705$ea6.525@news-server.bigpond.net.au>


mountain man wrote:
> "paul c" <toledobythesea_at_oohay.ac> wrote in message
> news:CIQgf.578722$tl2.426979_at_pd7tw3no...

>>mountain man wrote:
>>>"paul c" <toledobythesea_at_oohay.ac> wrote in message 
>>>>Frank Hamersley wrote:
>>>>>JOG wrote:
>>>>>>michael_at_preece.net wrote:

[..]
>
> The technical implementation of the handling of null values
> within the different RDBMS and DBMS software vendors
> such as Microsoft, Oracle, IBM, etc are diverse, as are
> the various kinds of breakfast cereals.

Do you know of a reference that explains these variations succinctly - I must admit my breadth of vendor quotient is quite low.

Until now I had assumed most (if not all) performed the 3VL fandango in the same direction around the dance floor - especially the (NULL == NULL) is FALSE outcome.

I had (previously?) thought the angst in this issue was more driven by ppl being aggravated by the "apparently" non-sensical outcomes when NULL values appear in join elements and/or procedural code and lead to unexpected results (bugs).

Cheers, Frank. (Germany 06 Oi Oi Oi) Received on Wed Nov 23 2005 - 04:59:48 CST

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