[PostGIS] #5959: Query planner vastly underestimates number of rows matched by GIST index

PostGIS trac at osgeo.org
Mon Oct 20 06:03:49 PDT 2025


#5959: Query planner vastly underestimates number of rows matched by GIST index
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  Reporter:  alexobs  |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.5.5
 Component:  postgis  |    Version:  3.5.x
Resolution:           |   Keywords:
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Comment (by alexobs):

 > Oh, does this do the same thing with ST_Intersects?

 Yes, I'm seeing the same behavior with ST_Intersects.

 > Doing a bisection on a system that displays the problem would be good.

 I could try that, but I don't have much experience with manually compiling
 software, let alone postgres plugins.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5959#comment:4>
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