[Georuby-devel] Aggregate Envelopes in MySQL

Guilhem Vellut guilhem.vellut at gmail.com
Thu May 18 12:40:19 EDT 2006

>1.  If anybody has a PostGIS database handy, can you confirm for me  
>that it behaves differently, and that when you do something like:
>SELECT Extent(the_geom) from some_spatial_table;
>it returns a single row with the aggregate extent?

That's right. Only one row is returned with the aggregate extent.

>2. Would having an aggregate extent function built into the mysql  
>part of spatial_adapter be useful?  If so, I'll clean up my code and  
>can probably get a patch out within the next day or two



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