Re: random

> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> >> Jelle Ouwerkerk <jelle(at)openface(dot)ca> 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?

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