[postgis-tickets] [PostGIS] #4404: Support Function for Selectivity

[PostGIS]

#4404: Support Function for Selectivity
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 Reporter:  pramsey  |      Owner:  pramsey
     Type:  defect   |     Status:  assigned
 Priority:  blocker  |  Milestone:  PostGIS 3.0.0
Component:  postgis  |    Version:  trunk
 Keywords:           |
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 Fun quirk of using support functions instead of inlined op+function
 combination: instead of getting operator selectivity in our join/filters
 we are now getting the function selectivity. That means they are WRONG,
 very WRONG. So now we need to bind the support functions into the usual
 selectivity mechanisms so they can return correct selectivity. Hopefully
 support functions and selectivity understand join context as well as scan
 context.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4404>
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