Re: Examples of SQL anomalies?

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Thu, 03 Jul 2008 11:21:04 -0300
Message-ID: <486ce055$0$4032$9a566e8b@news.aliant.net>


David Cressey wrote:

> "Gene Wirchenko" <genew_at_ocis.net> wrote in message
> news:rlin64punqm3lhsl79ls0rmt46kp9atbtb_at_4ax.com...
>

>>"David Cressey" <cressey73_at_verizon.net> wrote:
>>
>>
>>>"Gene Wirchenko" <genew_at_ocis.net> wrote in message
>>
>>[snip]
>>
>>
>>>>     Null is the misleading datum.
>>>
>>>Except that null isn't a datum.  If you consider it a datum, that may be

>
> why
>
>>>you are misled.
>>
>>     Null is a datum.  It is not a value.

>
> No, a marker indicating that a datum is missing is not a datum. At best,
> it's a metadatum.

It's not a value. It is, however, a datum. It is information encoded suitably for machine processing even if the machine processing is inconsistent and poor machine processing. Received on Thu Jul 03 2008 - 09:21:04 CDT

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