[postgis-devel] [PostGIS] #259: ST_Distance geography throws an error with empty geographies

[PostGIS]

#259: ST_Distance geography throws an error with empty geographies
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  Reporter:  robe     |       Owner:  pramsey      
      Type:  defect   |      Status:  closed       
  Priority:  medium   |   Milestone:  postgis 1.5.0
 Component:  postgis  |     Version:               
Resolution:  fixed    |    Keywords:               
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Comment (by mcayland):

 Hmmm I think I like Paul's original idea of returning NULL here, mainly
 because 0.0 is also a valid distance. Otherwise if a user unknowingly
 passes in an empty polygon to the distance calculation, then they are
 returned a seemingly meaningful answer for a meaningless calculation :(


 ATB,

 Mark.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/259#comment:4>
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