[postgis-tickets] [PostGIS] #3932: Enable Index Only Scan on geometry

PostGIS trac at osgeo.org
Tue Nov 21 22:42:35 PST 2017


#3932: Enable Index Only Scan on geometry
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  Reporter:  x4m      |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 2.4.2
 Component:  postgis  |    Version:  2.4.x
Resolution:           |   Keywords:
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Comment (by komzpa):

 Hello,

 gist geometry index "compresses" geometry into its bounding box. It is
 impossible to get back a valid representation, even for points, as SRID is
 lost on this conversion. Only way is to go back to the heap and read it
 from there.

 Is there some clever hack around this, or you haven't checked query
 output?

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3932#comment:2>
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