Re: Counting propositions
Date: 15 Jun 2004 03:22:18 -0700
Message-ID: <c0e3f26e.0406150222.fe2eea5_at_posting.google.com>
"x" <x-false_at_yahoo.com> wrote in message news:<40ce9db7_at_post.usenet.com>...
> **** Post for FREE via your newsreader at post.usenet.com ****
>
> "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? Received on Tue Jun 15 2004 - 12:22:18 CEST