[postgis-tickets] [PostGIS] #2493: ST_DumpValues should return an empty array when passed an empty raster

[PostGIS]

#2493: ST_DumpValues should return an empty array when passed an empty raster
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 Reporter:  pracine  |       Owner:  dustymugs
     Type:  defect   |      Status:  new      
 Priority:  medium   |   Milestone:           
Component:  raster   |     Version:  trunk    
 Keywords:           |  
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 SELECT (ST_DumpValues(ST_AddBand(ST_MakeEmptyRaster(0, 0, 0, 0, 1),
 ARRAY[ROW(NULL, '8BUI', 255, 0),ROW(NULL, '16BUI', 1,
 2)]::addbandarg[]))).*

 should return one row per band with the number of the band and an empty
 array for the values. Right now it just return nothing.

 It is normal though that it returns nothing when there is no band:

 SELECT (ST_DumpValues(ST_MakeEmptyRaster(10, 10, 0, 0, 1))).*

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2493>
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