Re: NULLs: theoretical problems?

From: David Cressey <>
Date: Wed, 08 Aug 2007 17:19:38 GMT
Message-ID: <KWmui.18747$ls4.14994_at_trndny07>

"sinister" <sinister_at_nospam.invalid> wrote in message
> Many discussions point out one deficiency of NULLs: that they collapse
> multiple, distinct concepts into one ("no value possible," "value
> "value not available at this time", etc).
> What are the other theoretical problems? My impression from skimming some
> threads in this ng is that some anomalies might occur, maybe having to do
> with NULLs and joins, or NULLs and keys composed of more than one field,
> I'm not sure.
"Nothin' ain't worth nothin', but it's free." --Kris Kristofferson -- Received on Wed Aug 08 2007 - 19:19:38 CEST

Original text of this message