what do you mean by 'arc'?
>
> From: "Nuno Souto" <nsouto_at_optusnet.com.au>
> Date: 2003/07/24 Thu AM 09:39:29 EDT
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Subject: Re: Union quries: INTERSECT, MINUS, etc
>
> ----- Original Message -----
>
>
> > I'm doing research for an article on union queries. I'm
> > interested in finding examples of problems that were solved
> > using UNION, UNION ALL, INTERSECT, or MINUS, with the latter
> > two being of special interest because I don't see them used
> > very often. If you can think of an interesting problem
> > you've solved using one of these keywords, I'd love to hear
> > about it.
> >
>
> UNION is useful to implement arcs.
> INTERSECT I've used very successfully
> with two CONNECT BY queries to retrieve all
> possible paths of travel between two points
> A and B in a table that implements flight legs.
> So don't go around saying it isn't used: I need
> it or the RAAF can't book people to flights. ;)
>
> Cheers
> Nuno Souto
> nsouto_at_optusnet.com.au
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Nuno Souto
> INET: nsouto_at_optusnet.com.au
>
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Received on Thu Jul 24 2003 - 08:05:52 CDT
