[postgis-tickets] [PostGIS] #1798: Performance issue with ST_Intersects(geometry, geometry)

[PostGIS]

#1798: Performance issue with ST_Intersects(geometry,geometry)
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  Reporter:  nicklas  |       Owner:  pramsey      
      Type:  defect   |      Status:  reopened     
  Priority:  medium   |   Milestone:  PostGIS 2.2.0
 Component:  postgis  |     Version:  2.0.x        
Resolution:           |    Keywords:               
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Comment(by strk):

 hint2: count(gid) to take off the cost of checking all attributes for
 being null.
 hint3: play with order by as that seems to be the only difference between
 the two calls to ST_Intersects, right ? (since the input table contains
 the same data)

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1798#comment:26>
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