I'm trying to apply ST_Union on a set of geometries (multypolygons, most of which containing a single geometry), to test the CascadedUnion performance, but the most of times it returns a null result. I haven't been able to find a rule: sometimes it seems to be the number of geometries, sometimes the order, etc. Could someone replicate it? Here is a small selection of my layer (it contains already validated geometries): http://www.giovanniallegri.it/share/postgis_selection.zip
thanks a lot, Giovanni _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
