File: index.sql

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pgsphere 1.5.1-2
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\set ECHO none
SELECT set_sphere_output_precision(8);
\set ECHO all

-- without idx

SELECT count(*) FROM spheretmp1 WHERE p @ scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;

SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;

SELECT count(*) FROM spheretmp4 WHERE l @  scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>';


-- create idx

CREATE TABLE spheretmp1b AS TABLE spheretmp1;
ANALYZE spheretmp1;

CREATE INDEX aaaidx ON spheretmp1 USING gist ( p );

CREATE INDEX spoint3_idx ON spheretmp1b USING gist (p spoint3);

CREATE INDEX bbbidx ON spheretmp2 USING gist ( c );

CREATE INDEX cccidx ON spheretmp3 USING gist ( b );

CREATE INDEX dddidx ON spheretmp4 USING gist ( l );

--with idx

SET enable_seqscan = OFF ;

SELECT count(*) FROM spheretmp1 WHERE p @ scircle '<(1,1),0.3>';
SELECT count(*) FROM spheretmp1b WHERE p @ scircle '<(1,1),0.3>';
SELECT count(*) FROM spheretmp1 WHERE p <@ scircle '<(1,1),0.3>';
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)' ;

SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>'  ;

SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>' ;

SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';

SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;

SELECT count(*) FROM spheretmp4 WHERE l @  scircle '<(1,1),0.3>' ;

SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>' ;

-- test spoint3 operator class with and without index-only scan

SET enable_bitmapscan = OFF;
SET enable_indexonlyscan = ON;

EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
                    SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
                    SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';

SET enable_indexonlyscan = OFF;

EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
                    SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
                    SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';

-- test hash opclass

CREATE TABLE spheretmp1c AS TABLE spheretmp1;

SELECT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>' ORDER BY p::text;
WITH points AS (SELECT DISTINCT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>')
   SELECT p FROM points ORDER BY p::text;

CREATE INDEX spheretmp1c_hash_idx ON spheretmp1c USING hash(p);
EXPLAIN (COSTS OFF) SELECT * FROM spheretmp1c WHERE p = '(0.67 , 0.97)';