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index.out
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\set ECHO none
set_sphere_output_precision
-----------------------------
SET 8
(1 row)
-- without idx
SELECT count(*) FROM spheretmp1 WHERE p @ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>';
count
-------
12
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>';
count
-------
48
(1 row)
SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';
count
-------
28
(1 row)
SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;
count
-------
1
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l @ scircle '<(1,1),0.3>';
count
-------
8
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>';
count
-------
40
(1 row)
-- 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>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p @ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
SELECT count(*) FROM spheretmp1 WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)' ;
count
-------
4
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c @ scircle '<(1,1),0.3>' ;
count
-------
12
(1 row)
SELECT count(*) FROM spheretmp2 WHERE c && scircle '<(1,1),0.3>' ;
count
-------
48
(1 row)
SELECT count(*) FROM spheretmp3 WHERE b && scircle '<(1,1),0.3>';
count
-------
28
(1 row)
SELECT count(*) FROM spheretmp3 WHERE spoint '(3.09 , 1.25)' @ b ;
count
-------
1
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l @ scircle '<(1,1),0.3>' ;
count
-------
8
(1 row)
SELECT count(*) FROM spheretmp4 WHERE l && scircle '<(1,1),0.3>' ;
count
-------
40
(1 row)
-- 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>';
QUERY PLAN
--------------------------------------------------------
Aggregate
-> Index Only Scan using spoint3_idx on spheretmp1b
Index Cond: (p <@ '<(1 , 1) , 0.3>'::scircle)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
QUERY PLAN
--------------------------------------------------------
Aggregate
-> Index Only Scan using spoint3_idx on spheretmp1b
Index Cond: (p = '(3.09 , 1.25)'::spoint)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
count
-------
4
(1 row)
SET enable_indexonlyscan = OFF;
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
QUERY PLAN
-------------------------------------------------------
Aggregate
-> Index Scan using spoint3_idx on spheretmp1b
Index Cond: (p <@ '<(1 , 1) , 0.3>'::scircle)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p <@ scircle '<(1,1),0.3>';
count
-------
32
(1 row)
EXPLAIN (COSTS OFF) SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
QUERY PLAN
---------------------------------------------------
Aggregate
-> Index Scan using spoint3_idx on spheretmp1b
Index Cond: (p = '(3.09 , 1.25)'::spoint)
(3 rows)
SELECT count(*) FROM spheretmp1b WHERE p = spoint '(3.09 , 1.25)';
count
-------
4
(1 row)
-- test hash opclass
CREATE TABLE spheretmp1c AS TABLE spheretmp1;
SELECT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>' ORDER BY p::text;
p
---------------
(0.67 , 0.97)
(0.67 , 0.97)
(0.67 , 0.97)
(0.67 , 0.97)
(1.07 , 1.09)
(1.07 , 1.09)
(1.07 , 1.09)
(1.07 , 1.09)
(1.24 , 0.95)
(1.24 , 0.95)
(1.24 , 0.95)
(1.24 , 0.95)
(12 rows)
WITH points AS (SELECT DISTINCT p FROM spheretmp1c WHERE p <@ scircle '<(1,1),0.2>')
SELECT p FROM points ORDER BY p::text;
p
---------------
(0.67 , 0.97)
(1.07 , 1.09)
(1.24 , 0.95)
(3 rows)
CREATE INDEX spheretmp1c_hash_idx ON spheretmp1c USING hash(p);
EXPLAIN (COSTS OFF) SELECT * FROM spheretmp1c WHERE p = '(0.67 , 0.97)';
QUERY PLAN
------------------------------------------------------
Index Scan using spheretmp1c_hash_idx on spheretmp1c
Index Cond: (p = '(0.67 , 0.97)'::spoint)
(2 rows)