[postgis-devel] [PostGIS] #1024: Change 3D relationship functions to use &&& instead of &&
PostGIS
trac at osgeo.org
Mon Nov 14 00:04:36 PST 2011
#1024: Change 3D relationship functions to use &&& instead of &&
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Reporter: robe | Owner: pramsey
Type: task | Status: new
Priority: medium | Milestone: PostGIS 2.0.0
Component: postgis | Version: trunk
Keywords: |
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Comment(by nicklas):
Hmm,
"&& AND &&& AND _ST_3D
That will catch both indexes and choose the cheapest one to test first"
Does that mean it will use the cheapest to test or the one giving less job
for the recheck?
I mean I guess && is cheaper do do but it will sort away fewer records and
send more of them for recheck. How smart is the planner?
/Nicklas
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1024#comment:4>
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