On Sun, 21 Sep 2008, "Anton Belyaev" <[EMAIL PROTECTED]> writes:
> SELECT * FROM towns where alt1 <= alt <= alt2 AND long1 <= long <=
> long2 ORDER BY population LIMIT 10;

You're absolutely on the wrong path. Don't try to implement a logic,
that has been implemented by PostgreSQL in the most possibly efficient
way in its bounds. See geographic data types[1] (e.g. box) and
geographic functions[2] (e.g. @> a.k.a contains).


Regards.

[1] http://www.postgresql.org/docs/current/interactive/datatype-geometric.html
[2] http://www.postgresql.org/docs/current/interactive/functions-geometry.html

-- 
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

Reply via email to