On Fri, 19 Sep 2003, Ulrich Meis wrote:
> select * from quotes where id=1+round(random()* cast ((select max(id)
> from quotes) as double precision));
> id | quote |
> author
> -----+-----------------------------------------------------------+------
> -----------
> 187 | Vergib Deinen Feinden, aber vergiss niemals ihre Namen. | John
> F. Kennedy
> 377 | Die Wirklichkeit ist nicht so oder so, sondern so und so. | Harry
> Mulisch
> (2 rows)
>
> I'm not really into databases, but this sounds wrong. Most of the time,
> I actually get 0 results.
The problem is that random() is evaluated on each line giving a different
result.
Kris Jurka
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