[PostGIS] #5953: Slow st_intersection with big input polygons

PostGIS trac at osgeo.org
Wed Aug 13 05:21:44 PDT 2025


#5953: Slow st_intersection with big input polygons
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  Reporter:  Lars Aksel Opsahl  |      Owner:  pramsey
      Type:  enhancement        |     Status:  new
  Priority:  medium             |  Milestone:  PostGIS 3.5.4
 Component:  postgis            |    Version:  master
Resolution:                     |   Keywords:
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Comment (by Lars Aksel Opsahl):

 Thanks for comment. With Postgis Topology and if this layers was added to
 the database already, the spatial relations are persistent and we do not
 need compute them every them so that would be very fast. One problem with
 out case is that we need download new data from users every time and then
 it's much easier to use simple feature.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5953#comment:9>
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