[postgis-devel] Re: [PostGIS] #101: ST_Union on one-row table doesn't union

PostGIS trac at osgeo.org
Thu Jun 4 10:25:44 PDT 2009


#101: ST_Union on one-row table doesn't union
----------------------+-----------------------------------------------------
  Reporter:  pramsey  |       Owner:  pramsey      
      Type:  defect   |      Status:  closed       
  Priority:  medium   |   Milestone:  postgis 1.4.0
 Component:  postgis  |     Version:  1.4          
Resolution:  invalid  |    Keywords:               
----------------------+-----------------------------------------------------
Comment (by robe):

 Oh.  How did I miss that one. I think I would have understood that line.
 So you don't want to fix?  In theory if you union a multipolygon you
 expect the boundaries to dissolve.

 Though if that line is the only issue - how come when I unioned with the
 non-agg version

 ST_Union(emptygeomcollection, badgeom)  --> I got back the same non-
 unioned multigeom or is there similar code there.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/101#comment:12>
PostGIS <http://trac.osgeo.org/postgis/>
PostGIS


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