Hello,i´m from argentina, so excuse my english.
My problem is i have a table with 500000 record,polygons and points type
and i have to find objects which intersects with an boundary in particular
Example of ,my query
select * from zone where geometry @ (select geometry from othertable
where id=1)
My table definition:
CREATE TABLE "zone"
(
zoneid integer NOT NULL DEFAULT nextval('zonas_id_seq'::regclass),
"name" text,
buffer integer,
description text,
layerid integer,
geometry geometry,
color integer,
CONSTRAINT zone_pk PRIMARY KEY (zoneid),
CONSTRAINT enforce_dims_geometry CHECK (st_ndims(geometry) = 2),
CONSTRAINT enforce_srid_geometry CHECK (st_srid(geometry) = 4326)
)
WITH (
OIDS=FALSE
);
ALTER TABLE "zone" OWNER TO postgres;
-- Index: idx_zone_geometry
-- DROP INDEX idx_zone_geometry;
CREATE INDEX idx_zone_geometry
ON "zone"
USING gist
(geometry);
-- Index: idx_zone_zoneid
-- DROP INDEX idx_zone_zoneid;
CREATE INDEX idx_zone_zoneid
ON "zone"
USING btree
(zoneid);
I have test of differents ways to accelerate my query with other
functions like st_distance,st_dwithin,etc
but do not know which to use
Thanks
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