postgresql/contrib/bloom/expected/bloom.out

CREATE EXTENSION bloom;
CREATE TABLE tst (
	i	int4,
	t	text
);
INSERT INTO tst SELECT i%10, substr(md5(i::text), 1, 1) FROM generate_series(1,2000) i;
CREATE INDEX bloomidx ON tst USING bloom (i, t) WITH (col1 = 3);
SET enable_seqscan=on;
SET enable_bitmapscan=off;
SET enable_indexscan=off;
SELECT count(*) FROM tst WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tst WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

SET enable_seqscan=off;
SET enable_bitmapscan=on;
SET enable_indexscan=on;
EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE i = 7;
                QUERY PLAN                 
-------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tst
         Recheck Cond: (i = 7)
         ->  Bitmap Index Scan on bloomidx
               Index Cond: (i = 7)
(5 rows)

EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE t = '5';
                QUERY PLAN                 
-------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tst
         Recheck Cond: (t = '5'::text)
         ->  Bitmap Index Scan on bloomidx
               Index Cond: (t = '5'::text)
(5 rows)

EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
                       QUERY PLAN                        
---------------------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tst
         Recheck Cond: ((i = 7) AND (t = '5'::text))
         ->  Bitmap Index Scan on bloomidx
               Index Cond: ((i = 7) AND (t = '5'::text))
(5 rows)

SELECT count(*) FROM tst WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tst WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

DELETE FROM tst;
INSERT INTO tst SELECT i%10, substr(md5(i::text), 1, 1) FROM generate_series(1,2000) i;
VACUUM ANALYZE tst;
SELECT count(*) FROM tst WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tst WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

DELETE FROM tst WHERE i > 1 OR t = '5';
VACUUM tst;
INSERT INTO tst SELECT i%10, substr(md5(i::text), 1, 1) FROM generate_series(1,2000) i;
SELECT count(*) FROM tst WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tst WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

VACUUM FULL tst;
SELECT count(*) FROM tst WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tst WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

-- Try an unlogged table too
CREATE UNLOGGED TABLE tstu (
	i	int4,
	t	text
);
INSERT INTO tstu SELECT i%10, substr(md5(i::text), 1, 1) FROM generate_series(1,2000) i;
CREATE INDEX bloomidxu ON tstu USING bloom (i, t) WITH (col2 = 4);
SET enable_seqscan=off;
SET enable_bitmapscan=on;
SET enable_indexscan=on;
EXPLAIN (COSTS OFF) SELECT count(*) FROM tstu WHERE i = 7;
                 QUERY PLAN                 
--------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tstu
         Recheck Cond: (i = 7)
         ->  Bitmap Index Scan on bloomidxu
               Index Cond: (i = 7)
(5 rows)

EXPLAIN (COSTS OFF) SELECT count(*) FROM tstu WHERE t = '5';
                 QUERY PLAN                 
--------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tstu
         Recheck Cond: (t = '5'::text)
         ->  Bitmap Index Scan on bloomidxu
               Index Cond: (t = '5'::text)
(5 rows)

EXPLAIN (COSTS OFF) SELECT count(*) FROM tstu WHERE i = 7 AND t = '5';
                       QUERY PLAN                        
---------------------------------------------------------
 Aggregate
   ->  Bitmap Heap Scan on tstu
         Recheck Cond: ((i = 7) AND (t = '5'::text))
         ->  Bitmap Index Scan on bloomidxu
               Index Cond: ((i = 7) AND (t = '5'::text))
(5 rows)

SELECT count(*) FROM tstu WHERE i = 7;
 count 
-------
   200
(1 row)

SELECT count(*) FROM tstu WHERE t = '5';
 count 
-------
   112
(1 row)

SELECT count(*) FROM tstu WHERE i = 7 AND t = '5';
 count 
-------
    13
(1 row)

RESET enable_seqscan;
RESET enable_bitmapscan;
RESET enable_indexscan;
-- Run amvalidator function on our opclasses
SELECT opcname, amvalidate(opc.oid)
FROM pg_opclass opc JOIN pg_am am ON am.oid = opcmethod
WHERE amname = 'bloom'
ORDER BY 1;
 opcname  | amvalidate 
----------+------------
 int4_ops | t
 text_ops | t
(2 rows)