I'm nowadays tryng to use postgresql to store geographical data to use
them with a gis program (GRASS).
The coordinates of each point are stored in a field that is a
Anyone can tell me if postgress uses, for this kind of data, a storing
method like HHCODE, poin-quad-trees (or anything better) , or it stores
point-data like anything else?
A query like this one:
" SELECT coordinates FROM table WHERE coordinates @ '((1,1),1)'::circle
is executed like anything else, processing evry tuple in the table ?
If so, anyone knows how to implement a more complex storing method?
Thanks to all,
pgsql-interfaces by date
|Next:||From: Tom Lane||Date: 1998-11-10 14:52:55|
|Subject: Re: [INTERFACES] PGAccess Question |
|Previous:||From: Richard Reyes||Date: 1998-11-10 03:04:41|
|Subject: PGAccess Question|