Re: random

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jelle Ouwerkerk <jelle(at)openface(dot)ca>, pgsql-sql(at)postgresql(dot)org
Subject: Re: random
Date: 2001-03-05 21:04:35
Message-ID: 200103052104.QAA01988@candle.pha.pa.us
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> 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();
>

How does that work?

test=> select random();
random
-------------------
0.896045367650709
(1 row)

However:

test=> select * from pg_class order by random();

does return some output. Is it random, and if so, how?

--
Bruce Momjian | http://candle.pha.pa.us
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