[postgis-tickets] [PostGIS] #2839: Improve raster selectivity estimator

[PostGIS]

#2839: Improve raster selectivity estimator
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 Reporter:  strk         |       Owner:  pramsey
     Type:  enhancement  |      Status:  new    
 Priority:  medium       |   Milestone:         
Component:  postgis      |     Version:  trunk  
 Keywords:               |  
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 As discussed in #1828 the selectivity estimator does noo support
 functional comparison, but for the raster case functional is the only
 possible index, and the histogram is already based on that exact same
 function.

 This ticket is to find out if it's possible to check if the function used
 in the query is the same used to build the index. When that's the case,
 the estimator should behave exactly as if the query was not functional.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2839>
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