> Bruce Momjian <[EMAIL PROTECTED]> writes:
> >> Jelle Ouwerkerk <[EMAIL PROTECTED]> writes:
> > Also, is there a way to randomize the order of a result set?
> >> 
> >> There's always
> >> SELECT * FROM foo ORDER BY random();
> 
> > However:
> >     test=> select * from pg_class order by random();
> > does return some output.  Is it random, and if so, how?
> 
> Sure.  The function is marked noncachable, so it gets evaluated
> afresh at each row --- but only once per row, as the sort step doesn't
> recompute any values.  Should work just peachy, and it seems to do
> so in a couple quick tests.

But random returns a random value from 0-1, right?  How does that work
in ORDER BY?

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  [EMAIL PROTECTED]               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

---------------------------(end of broadcast)---------------------------
TIP 2: you can get off all lists at once with the unregister command
    (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])

Reply via email to