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Re: Question

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Chris Travers <chris(at)travelamericas(dot)com>
Cc: David Costa <geeks(at)dotgeek(dot)org>, pgsql-advocacy(at)postgresql(dot)org
Subject: Re: Question
Date: 2004-02-28 22:49:23
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-advocacy
Chris Travers wrote:
> On Sat, 2004-02-21 at 09:13, David Costa wrote:
> > dead elephant  ;) what about a cool one line postgresql query in lieu 
> > of him ? could demonstrate the logic power of postgresql vs mysql and 
> > others
> > anyone willing to share a nice one ?
> Hmmm....  Thinking of PostgreSQL vs MySQL vs. Firebird.....
> Unfortunately most of my complex queries are 8-10 lines long and use
> features such as subselects and UNION statements.  Those will show the
> difference between MySQL and PostgreSQL, but should work in
> Interbase/Firebird.
> I am afraid the request to demonstrate the logic power of PostgreSQL in
> one line is sort of like asking for a proof to Fermat's Theorem in one
> double-spaced page and normal font size.  If someone can do this, I will
> be quite impressed :-P

How about:

	SELECT * FROM tab ORDER BY random() LIMIT 5

to pull 5 random rows from a table.

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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