[postgis-tickets] [PostGIS] #3739: ST_Within Not using index

[PostGIS]

#3739: ST_Within Not using index
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  Reporter:  postgispaul  |      Owner:  pramsey
      Type:  defect       |     Status:  new
  Priority:  medium       |  Milestone:  PostGIS 2.3.3
 Component:  postgis      |    Version:  2.3.x
Resolution:               |   Keywords:
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Comment (by postgispaul):

 with && it behaves normally:
 {{{
 Nested Loop  (cost=1.12..36813.06 rows=317184 width=229)
   Output: s.way
   ->  Index Scan using planet_osm_polygon_pkey on
 public.planet_osm_polygon ap  (cost=0.57..2.79 rows=1 width=229)
         Output: ap.osm_id, ap.highway, ap.surface, ap.railway,
 ap.waterway, ap.tunnel, ap.bridge, ap.oneway, ap.access, ap.name,
 ap.z_order, ap.way_area, ap.area, ap.natural, ap.water, ap.admin_level,
 ap.boundary, ap.landuse, ap.amenity, ap.parking, ap.a (...)
         Index Cond: (ap.osm_id = 123456)
   ->  Index Scan using planet_osm_polygon_index on
 public.planet_osm_polygon s  (cost=0.55..36721.72 rows=8855 width=229)
         Output: s.osm_id, s.highway, s.surface, s.railway, s.waterway,
 s.tunnel, s.bridge, s.oneway, s.access, s.name, s.z_order, s.way_area,
 s.area, s.natural, s.water, s.admin_level, s.boundary, s.landuse,
 s.amenity, s.parking, s.aeroway, s.military, s (...)
         Index Cond: (ap.way && s.way)
         Filter: _st_contains(ap.way, s.way)
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3739#comment:7>
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