Need a little help, this may not be the forum, but I thought I would
throw it out there!
I am looking to minimise the search area in this query
SELECT objectid
FROM
level_1_20151206 AS A, water_polygon AS Z
WHERE
(SELECT ST_Overlaps (A.the_geom, Z.geom));
What I want to do is use the extent of A's geometry to limit the search
for overlaps with Z if that makes sense!?
These are both large National coverage datasets.
Any help suggestions welcomed!!
Regards,
Richard.
OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
OPW - Looking to the future - Caring for the past
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