[postgis-devel] [PostGIS] #230: st_expand seems to affect the execution order wich affects st_dwithin

[PostGIS]

#230: st_expand seems to affect the execution order wich affects st_dwithin
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  Reporter:  nicklas  |       Owner:  robe                     
      Type:  defect   |      Status:  assigned                 
  Priority:  medium   |   Milestone:  postgis 1.4.1            
 Component:  postgis  |     Version:  1.4                      
Resolution:           |    Keywords:  st_dwithin st_expand bbox
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Comment (by robe):

 Well the main issue is that costs were introduced in 8.3 so they aren't
 supported in 8.2.  That is one reason we haven't applied costs.  So we'll
 need ot incorporate it in such as fashion as to not apply to 8.2.

 The other issue is that we just haven't gotten around to applying costs to
 all the functions.  I think we can take an easy rule of thumb and just set
 them all to 100 except for the operators though.  Then apply say 200 for
 more intensive like ST_Distance.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/230#comment:4>
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