Re: NULLs: theoretical problems?

"sinister" <sinister_at_nospam.invalid> wrote in message news:wa-dnYfs8-TuAyTbnZ2dnUVZ_tSknZ2d_at_comcast.com...
> Many discussions point out one deficiency of NULLs: that they collapse
> multiple, distinct concepts into one ("no value possible," "value
missing,"
> "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,
but
> 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