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

[PostGIS]

#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 robe):

 strk I recall complaining about this very thing to pramsey.  I thought the
 issue was that there is no way to represent the bounding box for geography
 as a geography at least that was the case in 1.5) so you really couldn't
 output it without doing a lengthy computation.  That may have changed
 though with our new underlying format.

 What cached bbox are you talking about? certainly not the one for POINT(0
 0 ) since that would be wrong.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/1828#comment:28>
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