Re: Randomize Result Set Order
От | Bruce Momjian |
---|---|
Тема | Re: Randomize Result Set Order |
Дата | |
Msg-id | 200109281953.f8SJrU714614@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Randomize Result Set Order (merlyn@stonehenge.com (Randal L. Schwartz)) |
Список | pgsql-general |
> >>>>> "Ryan" == Ryan Mahoney <ryan@paymentalliance.net> writes: > > Ryan> Is there an easy way to randomize the order that records get returned in? > Ryan> Don't imagine there is - but thought I'd ask ;) > > order by random() > > I even threw it into my latest Linux Magazine column, expounding the > virtues of the official Database of RedHat. I still haven't figured out how that function call does this trick. My guess is that because we can order by a function, it is calling random() for every row and just sorting on that. In normal usage, the functionm would reference database columns. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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