[postgis-users] Aggregate Functions

[David Garnier]

> What is a spatial aggregate? Same thing, only with goemetries. I really 
> look forward to being able to do this to create a single drainage 
> polygon for a river system:
> 
>    select union(geom) from watersheds where ws_code > '1000331421'

Me too. It's kind of a pain to do this kind in Java and there is always
this little voice in the back of your head that just scream "THIS MUST
BE DONE ON THE DATABASE". Gets painful after a while.

Best Regards,
-- 
David Garnier <david.garnier at etudier-online.com>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 241 bytes
Desc: not available
URL: <http://lists.osgeo.org/pipermail/postgis-users/attachments/20030220/e2d256c3/attachment.pgp>