[postgis-devel] [PostGIS] #253: Gist causes wrong result from ~=

PostGIS trac at osgeo.org
Fri Oct 2 03:29:10 PDT 2009


#253: Gist causes wrong result from ~=
----------------------+-----------------------------------------------------
  Reporter:  nicklas  |       Owner:  pramsey      
      Type:  defect   |      Status:  new          
  Priority:  medium   |   Milestone:  postgis 1.5.0
 Component:  postgis  |     Version:  1.4.X        
Resolution:           |    Keywords:               
----------------------+-----------------------------------------------------
Comment (by robe):

 It sounds similar to the bug we had a while ago where the bboxes were not
 being regenerated, though that was a GIST bug fixed in 8.3.5.  I suspect
 this one is tooa gist bug too.

 I also tried with 8.3.7 (and if I remove the RECHECK (basically running
 with a 1.3.7)), it behaves badly like the 1.4.0.  So its nothing different
 in our codebase -- just that RECHECK that is camouflaging what I think to
 be a gist bug.  I'm not even quite clear what RECHECK does.  Mark or Paul
 -- can you explain that.  I'm concerned this is serious that may bite us
 in other unpredictable ways with the more common &&.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/253#comment:5>
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