Re: Reverse Index ... how to ... - Mailing list pgsql-sql

From Oleg Bartunov
Subject Re: Reverse Index ... how to ...
Date
Msg-id Pine.GSO.4.63.0604052220030.23110@ra.sai.msu.su
Whole thread Raw
In response to Reverse Index ... how to ...  ("Marc G. Fournier" <scrappy@postgresql.org>)
List pgsql-sql
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


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