Re: Counting propositions
Date: Tue, 15 Jun 2004 13:33:31 +0300
"Tony" <andrewst_at_onetel.net.uk> wrote in message
> "x" <x-false_at_yahoo.com> wrote in message
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> > "Paul G. Brown" <paul_geoffrey_brown_at_yahoo.com> wrote in message
> > news:57da7b56.0406141517.9cb7b7d_at_posting.google.com...
> > > Given that all relvars have a key, and assuming that your '*' is a
> > > macro that expands to 'all attributes' (don't matter what phase of
> > > query processing), then nr is going to equal the number of tuples in
> > > the relvar.
> > Ok. But why there is a need to know this number ?
> > It is like saying "today I made 100 affirmations".
> > Have you never wanted to know how many of something you had? Can you > not envisage a large business wanting to know, for example, how many > employees it has?
Employees yes. Propositions no.
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