Re: Reverse Index ... how to ...

Поиск
Список
Период
Сортировка
Искать
От
Oleg Bartunov
Тема
Re: Reverse Index ... how to ...
Дата
Msg-id
Pine.GSO.4.63.0604052220030.23110@ra.sai.msu.su
Ответ на
Reverse Index ... how to ... (Marc G. Fournier)
Список
Дерево обсуждения
Reverse Index ... how to ... "Marc G. Fournier" <scrappy@postgresql.org>
Re: Reverse Index ... how to ... Tom Lane <tgl@sss.pgh.pa.us>
Re: Reverse Index ... how to ... "Marc G. Fournier" <scrappy@postgresql.org>
Re: Reverse Index ... how to ... Oleg Bartunov <oleg@sai.msu.su>
On Wed, 5 Apr 2006, Marc G. Fournier wrote:

>
> I'm still searching through Google and whatnot, but not finding anything off 
> the bat ... is there some way of creating a 'REVERSE INDEX' on a column in a 
> table?
>
> For instance, when I do a 'CLUSTER' to sort a table based on an INDEX, I'd 
> like to sort it in reverse order, so would need the INDEX to go from 
> 'GREATEST to LOWEST', vs 'LOWEST to GREATEST' ...

use something like
select * into new_table from old_table order by some_key desc;

>
> Thx
>
> ----
> Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
> Email: scrappy@hub.org           Yahoo!: yscrappy              ICQ: 7615664
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: don't forget to increase your free space map settings
>
	Regards,		Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83

В списке pgsql-sql по дате отправления
От: Marc G. Fournier
Дата:
Сообщение: Reverse Index ... how to ...
От: Tom Lane
Дата:
FAQ