[postgis-devel] [PostGIS] #1828: Estimate returned by geography_gist_selectivity results in slow query plan for ST_DWithin

PostGIS trac at osgeo.org
Tue Jul 3 13:09:36 PDT 2012


#1828: Estimate returned by geography_gist_selectivity results in slow query plan
for ST_DWithin
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 Reporter:  realityexists  |       Owner:  mcayland     
     Type:  defect         |      Status:  new          
 Priority:  medium         |   Milestone:  PostGIS 2.0.2
Component:  postgis        |     Version:  2.0.x        
 Keywords:                 |  
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Comment(by strk):

 I'm thinking: do we really need to have both VAR && Expand(QUERY) _and_
 QUERY && Expand(VAR) ?
 Are we sure that's conceptually correct to do for ST_DWithin ?

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1828#comment:45>
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