[postgis-tickets] [PostGIS] #2242: ST_Union in aggregate form treats NULL as EMPTY

[PostGIS]

#2242: ST_Union in aggregate form treats NULL as EMPTY
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 Reporter:  gabrimonfa     |       Owner:  robe         
     Type:  defect         |      Status:  new          
 Priority:  medium         |   Milestone:  PostGIS 2.0.4
Component:  documentation  |     Version:  2.0.x        
 Keywords:                 |  
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Comment(by gabrimonfa):

 Ok, thank you all for the clarification.
 This behaviour is correct as per SQL standard and the same in almost all
 implementation.

 Since NULL handling maybe a source of confusion at first glance,
 clarifying it in the documentation would be perfect.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2242#comment:3>
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