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postgresql/src/test/regress/sql/brin_multi.sql
David Rowley c2a4078eba Enable BUFFERS with EXPLAIN ANALYZE by default 
The topic of turning EXPLAIN's BUFFERS option on with the ANALYZE option
has come up a few times over the past few years.  In many ways, doing this
seems like a good idea as it may be more obvious to users why a given
query is running more slowly than they might expect.  Also, from my own
(David's) personal experience, I've seen users posting to the mailing
lists with two identical plans, one slow and one fast asking why their
query is sometimes slow.  In many cases, this is due to additional reads.
Having BUFFERS on by default may help reduce some of these questions, and
if not, make it more obvious to the user before they post, or save a
round-trip to the mailing list when additional I/O effort is the cause of
the slowness.

The general consensus is that we want BUFFERS on by default with
ANALYZE.  However, there were more than zero concerns raised with doing
so.  The primary reason against is the additional verbosity, making it
harder to read large plans.  Another concern was that buffer information
isn't always useful so may not make sense to have it on by default.

It's currently December, so let's commit this to see if anyone comes
forward with a strong objection against making this change.  We have over
half a year remaining in the v18 cycle where we could still easily consider
reverting this if someone were to come forward with a convincing enough
reason as to why doing this is a bad idea.

There were two patches independently submitted to achieve this goal, one
by me and the other by Guillaume.  This commit is a mix of both of these
patches with some additional work done by me to adjust various
additional places in the documentation which include EXPLAIN ANALYZE
output.

Author: Guillaume Lelarge, David Rowley
Reviewed-by: Robert Haas, Greg Sabino Mullane, Michael Christofides
Discussion: https://postgr.es/m/CANNMO++W7MM8T0KyXN3ZheXXt-uLVM3aEtZd+WNfZ=obxffUiA@mail.gmail.com
2024-12-11 22:35:11 +13:00

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CREATE TABLE brintest_multi (
int8col bigint,
int2col smallint,
int4col integer,
oidcol oid,
tidcol tid,
float4col real,
float8col double precision,
macaddrcol macaddr,
macaddr8col macaddr8,
inetcol inet,
cidrcol cidr,
datecol date,
timecol time without time zone,
timestampcol timestamp without time zone,
timestamptzcol timestamp with time zone,
intervalcol interval,
timetzcol time with time zone,
numericcol numeric,
uuidcol uuid,
lsncol pg_lsn
) WITH (fillfactor=10);
INSERT INTO brintest_multi SELECT
142857 * tenthous,
thousand,
twothousand,
unique1::oid,
format('(%s,%s)', tenthous, twenty)::tid,
(four + 1.0)/(hundred+1),
odd::float8 / (tenthous + 1),
format('%s:00:%s:00:%s:00', to_hex(odd), to_hex(even), to_hex(hundred))::macaddr,
substr(fipshash(unique1::text), 1, 16)::macaddr8,
inet '10.2.3.4/24' + tenthous,
cidr '10.2.3/24' + tenthous,
date '1995-08-15' + tenthous,
time '01:20:30' + thousand * interval '18.5 second',
timestamp '1942-07-23 03:05:09' + tenthous * interval '36.38 hours',
timestamptz '1972-10-10 03:00' + thousand * interval '1 hour',
justify_days(justify_hours(tenthous * interval '12 minutes')),
timetz '01:30:20+02' + hundred * interval '15 seconds',
tenthous::numeric(36,30) * fivethous * even / (hundred + 1),
format('%s%s-%s-%s-%s-%s%s%s', to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'))::uuid,
format('%s/%s%s', odd, even, tenthous)::pg_lsn
FROM tenk1 ORDER BY unique2 LIMIT 100;
-- throw in some NULL's and different values
INSERT INTO brintest_multi (inetcol, cidrcol) SELECT
inet 'fe80::6e40:8ff:fea9:8c46' + tenthous,
cidr 'fe80::6e40:8ff:fea9:8c46' + tenthous
FROM tenk1 ORDER BY thousand, tenthous LIMIT 25;
-- test minmax-multi specific index options
-- number of values must be >= 16
CREATE INDEX brinidx_multi ON brintest_multi USING brin (
int8col int8_minmax_multi_ops(values_per_range = 7)
);
-- number of values must be <= 256
CREATE INDEX brinidx_multi ON brintest_multi USING brin (
int8col int8_minmax_multi_ops(values_per_range = 257)
);
-- first create an index with a single page range, to force compaction
-- due to exceeding the number of values per summary
CREATE INDEX brinidx_multi ON brintest_multi USING brin (
int8col int8_minmax_multi_ops,
int2col int2_minmax_multi_ops,
int4col int4_minmax_multi_ops,
oidcol oid_minmax_multi_ops,
tidcol tid_minmax_multi_ops,
float4col float4_minmax_multi_ops,
float8col float8_minmax_multi_ops,
macaddrcol macaddr_minmax_multi_ops,
macaddr8col macaddr8_minmax_multi_ops,
inetcol inet_minmax_multi_ops,
cidrcol inet_minmax_multi_ops,
datecol date_minmax_multi_ops,
timecol time_minmax_multi_ops,
timestampcol timestamp_minmax_multi_ops,
timestamptzcol timestamptz_minmax_multi_ops,
intervalcol interval_minmax_multi_ops,
timetzcol timetz_minmax_multi_ops,
numericcol numeric_minmax_multi_ops,
uuidcol uuid_minmax_multi_ops,
lsncol pg_lsn_minmax_multi_ops
);
DROP INDEX brinidx_multi;
CREATE INDEX brinidx_multi ON brintest_multi USING brin (
int8col int8_minmax_multi_ops,
int2col int2_minmax_multi_ops,
int4col int4_minmax_multi_ops,
oidcol oid_minmax_multi_ops,
tidcol tid_minmax_multi_ops,
float4col float4_minmax_multi_ops,
float8col float8_minmax_multi_ops,
macaddrcol macaddr_minmax_multi_ops,
macaddr8col macaddr8_minmax_multi_ops,
inetcol inet_minmax_multi_ops,
cidrcol inet_minmax_multi_ops,
datecol date_minmax_multi_ops,
timecol time_minmax_multi_ops,
timestampcol timestamp_minmax_multi_ops,
timestamptzcol timestamptz_minmax_multi_ops,
intervalcol interval_minmax_multi_ops,
timetzcol timetz_minmax_multi_ops,
numericcol numeric_minmax_multi_ops,
uuidcol uuid_minmax_multi_ops,
lsncol pg_lsn_minmax_multi_ops
) with (pages_per_range = 1);
CREATE TABLE brinopers_multi (colname name, typ text,
op text[], value text[], matches int[],
check (cardinality(op) = cardinality(value)),
check (cardinality(op) = cardinality(matches)));
INSERT INTO brinopers_multi VALUES
('int2col', 'int2',
'{>, >=, =, <=, <}',
'{0, 0, 800, 999, 999}',
'{100, 100, 1, 100, 100}'),
('int2col', 'int4',
'{>, >=, =, <=, <}',
'{0, 0, 800, 999, 1999}',
'{100, 100, 1, 100, 100}'),
('int2col', 'int8',
'{>, >=, =, <=, <}',
'{0, 0, 800, 999, 1428427143}',
'{100, 100, 1, 100, 100}'),
('int4col', 'int2',
'{>, >=, =, <=, <}',
'{0, 0, 800, 1999, 1999}',
'{100, 100, 1, 100, 100}'),
('int4col', 'int4',
'{>, >=, =, <=, <}',
'{0, 0, 800, 1999, 1999}',
'{100, 100, 1, 100, 100}'),
('int4col', 'int8',
'{>, >=, =, <=, <}',
'{0, 0, 800, 1999, 1428427143}',
'{100, 100, 1, 100, 100}'),
('int8col', 'int2',
'{>, >=}',
'{0, 0}',
'{100, 100}'),
('int8col', 'int4',
'{>, >=}',
'{0, 0}',
'{100, 100}'),
('int8col', 'int8',
'{>, >=, =, <=, <}',
'{0, 0, 1257141600, 1428427143, 1428427143}',
'{100, 100, 1, 100, 100}'),
('oidcol', 'oid',
'{>, >=, =, <=, <}',
'{0, 0, 8800, 9999, 9999}',
'{100, 100, 1, 100, 100}'),
('tidcol', 'tid',
'{>, >=, =, <=, <}',
'{"(0,0)", "(0,0)", "(8800,0)", "(9999,19)", "(9999,19)"}',
'{100, 100, 1, 100, 100}'),
('float4col', 'float4',
'{>, >=, =, <=, <}',
'{0.0103093, 0.0103093, 1, 1, 1}',
'{100, 100, 4, 100, 96}'),
('float4col', 'float8',
'{>, >=, =, <=, <}',
'{0.0103093, 0.0103093, 1, 1, 1}',
'{100, 100, 4, 100, 96}'),
('float8col', 'float4',
'{>, >=, =, <=, <}',
'{0, 0, 0, 1.98, 1.98}',
'{99, 100, 1, 100, 100}'),
('float8col', 'float8',
'{>, >=, =, <=, <}',
'{0, 0, 0, 1.98, 1.98}',
'{99, 100, 1, 100, 100}'),
('macaddrcol', 'macaddr',
'{>, >=, =, <=, <}',
'{00:00:01:00:00:00, 00:00:01:00:00:00, 2c:00:2d:00:16:00, ff:fe:00:00:00:00, ff:fe:00:00:00:00}',
'{99, 100, 2, 100, 100}'),
('macaddr8col', 'macaddr8',
'{>, >=, =, <=, <}',
'{b1:d1:0e:7b:af:a4:42:12, d9:35:91:bd:f7:86:0e:1e, 72:8f:20:6c:2a:01:bf:57, 23:e8:46:63:86:07:ad:cb, 13:16:8e:6a:2e:6c:84:b4}',
'{31, 17, 1, 11, 4}'),
('inetcol', 'inet',
'{=, <, <=, >, >=}',
'{10.2.14.231/24, 255.255.255.255, 255.255.255.255, 0.0.0.0, 0.0.0.0}',
'{1, 100, 100, 125, 125}'),
('inetcol', 'cidr',
'{<, <=, >, >=}',
'{255.255.255.255, 255.255.255.255, 0.0.0.0, 0.0.0.0}',
'{100, 100, 125, 125}'),
('cidrcol', 'inet',
'{=, <, <=, >, >=}',
'{10.2.14/24, 255.255.255.255, 255.255.255.255, 0.0.0.0, 0.0.0.0}',
'{2, 100, 100, 125, 125}'),
('cidrcol', 'cidr',
'{=, <, <=, >, >=}',
'{10.2.14/24, 255.255.255.255, 255.255.255.255, 0.0.0.0, 0.0.0.0}',
'{2, 100, 100, 125, 125}'),
('datecol', 'date',
'{>, >=, =, <=, <}',
'{1995-08-15, 1995-08-15, 2009-12-01, 2022-12-30, 2022-12-30}',
'{100, 100, 1, 100, 100}'),
('timecol', 'time',
'{>, >=, =, <=, <}',
'{01:20:30, 01:20:30, 02:28:57, 06:28:31.5, 06:28:31.5}',
'{100, 100, 1, 100, 100}'),
('timestampcol', 'timestamp',
'{>, >=, =, <=, <}',
'{1942-07-23 03:05:09, 1942-07-23 03:05:09, 1964-03-24 19:26:45, 1984-01-20 22:42:21, 1984-01-20 22:42:21}',
'{100, 100, 1, 100, 100}'),
('timestampcol', 'timestamptz',
'{>, >=, =, <=, <}',
'{1942-07-23 03:05:09, 1942-07-23 03:05:09, 1964-03-24 19:26:45, 1984-01-20 22:42:21, 1984-01-20 22:42:21}',
'{100, 100, 1, 100, 100}'),
('timestamptzcol', 'timestamptz',
'{>, >=, =, <=, <}',
'{1972-10-10 03:00:00-04, 1972-10-10 03:00:00-04, 1972-10-19 09:00:00-07, 1972-11-20 19:00:00-03, 1972-11-20 19:00:00-03}',
'{100, 100, 1, 100, 100}'),
('intervalcol', 'interval',
'{>, >=, =, <=, <}',
'{00:00:00, 00:00:00, 1 mons 13 days 12:24, 2 mons 23 days 07:48:00, 1 year}',
'{100, 100, 1, 100, 100}'),
('timetzcol', 'timetz',
'{>, >=, =, <=, <}',
'{01:30:20+02, 01:30:20+02, 01:35:50+02, 23:55:05+02, 23:55:05+02}',
'{99, 100, 2, 100, 100}'),
('numericcol', 'numeric',
'{>, >=, =, <=, <}',
'{0.00, 0.01, 2268164.347826086956521739130434782609, 99470151.9, 99470151.9}',
'{100, 100, 1, 100, 100}'),
('uuidcol', 'uuid',
'{>, >=, =, <=, <}',
'{00040004-0004-0004-0004-000400040004, 00040004-0004-0004-0004-000400040004, 52225222-5222-5222-5222-522252225222, 99989998-9998-9998-9998-999899989998, 99989998-9998-9998-9998-999899989998}',
'{100, 100, 1, 100, 100}'),
('lsncol', 'pg_lsn',
'{>, >=, =, <=, <, IS, IS NOT}',
'{0/1200, 0/1200, 44/455222, 198/1999799, 198/1999799, NULL, NULL}',
'{100, 100, 1, 100, 100, 25, 100}');
DO $x$
DECLARE
r record;
r2 record;
cond text;
idx_ctids tid[];
ss_ctids tid[];
count int;
plan_ok bool;
plan_line text;
BEGIN
FOR r IN SELECT colname, oper, typ, value[ordinality], matches[ordinality] FROM brinopers_multi, unnest(op) WITH ORDINALITY AS oper LOOP
-- prepare the condition
IF r.value IS NULL THEN
cond := format('%I %s %L', r.colname, r.oper, r.value);
ELSE
cond := format('%I %s %L::%s', r.colname, r.oper, r.value, r.typ);
END IF;
-- run the query using the brin index
SET enable_seqscan = 0;
SET enable_bitmapscan = 1;
plan_ok := false;
FOR plan_line IN EXECUTE format($y$EXPLAIN SELECT array_agg(ctid) FROM brintest_multi WHERE %s $y$, cond) LOOP
IF plan_line LIKE '%Bitmap Heap Scan on brintest_multi%' THEN
plan_ok := true;
END IF;
END LOOP;
IF NOT plan_ok THEN
RAISE WARNING 'did not get bitmap indexscan plan for %', r;
END IF;
EXECUTE format($y$SELECT array_agg(ctid) FROM brintest_multi WHERE %s $y$, cond)
INTO idx_ctids;
-- run the query using a seqscan
SET enable_seqscan = 1;
SET enable_bitmapscan = 0;
plan_ok := false;
FOR plan_line IN EXECUTE format($y$EXPLAIN SELECT array_agg(ctid) FROM brintest_multi WHERE %s $y$, cond) LOOP
IF plan_line LIKE '%Seq Scan on brintest_multi%' THEN
plan_ok := true;
END IF;
END LOOP;
IF NOT plan_ok THEN
RAISE WARNING 'did not get seqscan plan for %', r;
END IF;
EXECUTE format($y$SELECT array_agg(ctid) FROM brintest_multi WHERE %s $y$, cond)
INTO ss_ctids;
-- make sure both return the same results
count := array_length(idx_ctids, 1);
IF NOT (count = array_length(ss_ctids, 1) AND
idx_ctids @> ss_ctids AND
idx_ctids <@ ss_ctids) THEN
-- report the results of each scan to make the differences obvious
RAISE WARNING 'something not right in %: count %', r, count;
SET enable_seqscan = 1;
SET enable_bitmapscan = 0;
FOR r2 IN EXECUTE 'SELECT ' || r.colname || ' FROM brintest_multi WHERE ' || cond LOOP
RAISE NOTICE 'seqscan: %', r2;
END LOOP;
SET enable_seqscan = 0;
SET enable_bitmapscan = 1;
FOR r2 IN EXECUTE 'SELECT ' || r.colname || ' FROM brintest_multi WHERE ' || cond LOOP
RAISE NOTICE 'bitmapscan: %', r2;
END LOOP;
END IF;
-- make sure we found expected number of matches
IF count != r.matches THEN RAISE WARNING 'unexpected number of results % for %', count, r; END IF;
END LOOP;
END;
$x$;
RESET enable_seqscan;
RESET enable_bitmapscan;
INSERT INTO brintest_multi SELECT
142857 * tenthous,
thousand,
twothousand,
unique1::oid,
format('(%s,%s)', tenthous, twenty)::tid,
(four + 1.0)/(hundred+1),
odd::float8 / (tenthous + 1),
format('%s:00:%s:00:%s:00', to_hex(odd), to_hex(even), to_hex(hundred))::macaddr,
substr(fipshash(unique1::text), 1, 16)::macaddr8,
inet '10.2.3.4' + tenthous,
cidr '10.2.3/24' + tenthous,
date '1995-08-15' + tenthous,
time '01:20:30' + thousand * interval '18.5 second',
timestamp '1942-07-23 03:05:09' + tenthous * interval '36.38 hours',
timestamptz '1972-10-10 03:00' + thousand * interval '1 hour',
justify_days(justify_hours(tenthous * interval '12 minutes')),
timetz '01:30:20' + hundred * interval '15 seconds',
tenthous::numeric(36,30) * fivethous * even / (hundred + 1),
format('%s%s-%s-%s-%s-%s%s%s', to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'), to_char(tenthous, 'FM0000'))::uuid,
format('%s/%s%s', odd, even, tenthous)::pg_lsn
FROM tenk1 ORDER BY unique2 LIMIT 5 OFFSET 5;
SELECT brin_desummarize_range('brinidx_multi', 0);
VACUUM brintest_multi; -- force a summarization cycle in brinidx
-- Try inserting a values with NaN, to test distance calculation.
insert into public.brintest_multi (float4col) values (real 'nan');
insert into public.brintest_multi (float8col) values (real 'nan');
UPDATE brintest_multi SET int8col = int8col * int4col;
-- Test handling of inet netmasks with inet_minmax_multi_ops
CREATE TABLE brin_test_inet (a inet);
CREATE INDEX ON brin_test_inet USING brin (a inet_minmax_multi_ops);
INSERT INTO brin_test_inet VALUES ('127.0.0.1/0');
INSERT INTO brin_test_inet VALUES ('0.0.0.0/12');
DROP TABLE brin_test_inet;
-- Tests for brin_summarize_new_values
SELECT brin_summarize_new_values('brintest_multi'); -- error, not an index
SELECT brin_summarize_new_values('tenk1_unique1'); -- error, not a BRIN index
SELECT brin_summarize_new_values('brinidx_multi'); -- ok, no change expected
-- Tests for brin_desummarize_range
SELECT brin_desummarize_range('brinidx_multi', -1); -- error, invalid range
SELECT brin_desummarize_range('brinidx_multi', 0);
SELECT brin_desummarize_range('brinidx_multi', 0);
SELECT brin_desummarize_range('brinidx_multi', 100000000);
-- test building an index with many values, to force compaction of the buffer
CREATE TABLE brin_large_range (a int4);
INSERT INTO brin_large_range SELECT i FROM generate_series(1,10000) s(i);
CREATE INDEX brin_large_range_idx ON brin_large_range USING brin (a int4_minmax_multi_ops);
DROP TABLE brin_large_range;
-- Test brin_summarize_range
CREATE TABLE brin_summarize_multi (
value int
) WITH (fillfactor=10, autovacuum_enabled=false);
CREATE INDEX brin_summarize_multi_idx ON brin_summarize_multi USING brin (value) WITH (pages_per_range=2);
-- Fill a few pages
DO $$
DECLARE curtid tid;
BEGIN
LOOP
INSERT INTO brin_summarize_multi VALUES (1) RETURNING ctid INTO curtid;
EXIT WHEN curtid > tid '(2, 0)';
END LOOP;
END;
$$;
-- summarize one range
SELECT brin_summarize_range('brin_summarize_multi_idx', 0);
-- nothing: already summarized
SELECT brin_summarize_range('brin_summarize_multi_idx', 1);
-- summarize one range
SELECT brin_summarize_range('brin_summarize_multi_idx', 2);
-- nothing: page doesn't exist in table
SELECT brin_summarize_range('brin_summarize_multi_idx', 4294967295);
-- invalid block number values
SELECT brin_summarize_range('brin_summarize_multi_idx', -1);
SELECT brin_summarize_range('brin_summarize_multi_idx', 4294967296);
-- test brin cost estimates behave sanely based on correlation of values
CREATE TABLE brin_test_multi (a INT, b INT);
INSERT INTO brin_test_multi SELECT x/100,x%100 FROM generate_series(1,10000) x(x);
CREATE INDEX brin_test_multi_a_idx ON brin_test_multi USING brin (a) WITH (pages_per_range = 2);
CREATE INDEX brin_test_multi_b_idx ON brin_test_multi USING brin (b) WITH (pages_per_range = 2);
VACUUM ANALYZE brin_test_multi;
-- Ensure brin index is used when columns are perfectly correlated
EXPLAIN (COSTS OFF) SELECT * FROM brin_test_multi WHERE a = 1;
-- Ensure brin index is not used when values are not correlated
EXPLAIN (COSTS OFF) SELECT * FROM brin_test_multi WHERE b = 1;
-- do some inequality tests
CREATE TABLE brin_test_multi_1 (a INT, b BIGINT) WITH (fillfactor=10);
INSERT INTO brin_test_multi_1
SELECT i/5 + mod(911 * i + 483, 25),
i/10 + mod(751 * i + 221, 41)
FROM generate_series(1,1000) s(i);
CREATE INDEX brin_test_multi_1_idx_1 ON brin_test_multi_1 USING brin (a int4_minmax_multi_ops) WITH (pages_per_range=5);
CREATE INDEX brin_test_multi_1_idx_2 ON brin_test_multi_1 USING brin (b int8_minmax_multi_ops) WITH (pages_per_range=5);
SET enable_seqscan=off;
-- int: less than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a < 37;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a < 113;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a <= 177;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a <= 25;
-- int: greater than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a > 120;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a >= 180;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a > 71;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a >= 63;
-- int: equals
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a = 207;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a = 177;
-- bigint: less than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b < 73;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b <= 47;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b < 199;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b <= 150;
-- bigint: greater than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 93;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 37;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b >= 215;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 201;
-- bigint: equals
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b = 88;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b = 103;
-- now do the same, but insert the rows with the indexes already created
-- so that we don't use the "build callback" and instead use the regular
-- approach of adding rows into existing ranges
TRUNCATE brin_test_multi_1;
INSERT INTO brin_test_multi_1
SELECT i/5 + mod(911 * i + 483, 25),
i/10 + mod(751 * i + 221, 41)
FROM generate_series(1,1000) s(i);
-- int: less than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a < 37;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a < 113;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a <= 177;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a <= 25;
-- int: greater than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a > 120;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a >= 180;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a > 71;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a >= 63;
-- int: equals
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a = 207;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE a = 177;
-- bigint: less than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b < 73;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b <= 47;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b < 199;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b <= 150;
-- bigint: greater than
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 93;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 37;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b >= 215;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b > 201;
-- bigint: equals
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b = 88;
SELECT COUNT(*) FROM brin_test_multi_1 WHERE b = 103;
DROP TABLE brin_test_multi_1;
RESET enable_seqscan;
-- do some inequality tests for varlena data types
CREATE TABLE brin_test_multi_2 (a UUID) WITH (fillfactor=10);
INSERT INTO brin_test_multi_2
SELECT v::uuid FROM (SELECT row_number() OVER (ORDER BY v) c, v FROM (SELECT fipshash((i/13)::text) AS v FROM generate_series(1,1000) s(i)) foo) bar ORDER BY c + 25 * random();
CREATE INDEX brin_test_multi_2_idx ON brin_test_multi_2 USING brin (a uuid_minmax_multi_ops) WITH (pages_per_range=5);
SET enable_seqscan=off;
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a < '3d914f93-48c9-cc0f-f8a7-9716700b9fcd';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a > '3d914f93-48c9-cc0f-f8a7-9716700b9fcd';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a <= 'f369cb89-fc62-7e66-8987-007d121ed1ea';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a >= 'aea92132-c4cb-eb26-3e6a-c2bf6c183b5d';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a = '5feceb66-ffc8-6f38-d952-786c6d696c79';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a = '86e50149-6586-6131-2a9e-0b35558d84f6';
-- now do the same, but insert the rows with the indexes already created
-- so that we don't use the "build callback" and instead use the regular
-- approach of adding rows into existing ranges
TRUNCATE brin_test_multi_2;
INSERT INTO brin_test_multi_2
SELECT v::uuid FROM (SELECT row_number() OVER (ORDER BY v) c, v FROM (SELECT fipshash((i/13)::text) AS v FROM generate_series(1,1000) s(i)) foo) bar ORDER BY c + 25 * random();
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a < '3d914f93-48c9-cc0f-f8a7-9716700b9fcd';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a > '3d914f93-48c9-cc0f-f8a7-9716700b9fcd';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a <= 'f369cb89-fc62-7e66-8987-007d121ed1ea';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a >= 'aea92132-c4cb-eb26-3e6a-c2bf6c183b5d';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a = '5feceb66-ffc8-6f38-d952-786c6d696c79';
SELECT COUNT(*) FROM brin_test_multi_2 WHERE a = '86e50149-6586-6131-2a9e-0b35558d84f6';
DROP TABLE brin_test_multi_2;
RESET enable_seqscan;
-- test overflows during CREATE INDEX with extreme timestamp values
CREATE TABLE brin_timestamp_test(a TIMESTAMPTZ);
SET datestyle TO iso;
-- values close to timestamp minimum
INSERT INTO brin_timestamp_test
SELECT '4713-01-01 00:00:01 BC'::timestamptz + (i || ' seconds')::interval
FROM generate_series(1,30) s(i);
-- values close to timestamp maximum
INSERT INTO brin_timestamp_test
SELECT '294276-12-01 00:00:01'::timestamptz + (i || ' seconds')::interval
FROM generate_series(1,30) s(i);
CREATE INDEX ON brin_timestamp_test USING brin (a timestamptz_minmax_multi_ops) WITH (pages_per_range=1);
DROP TABLE brin_timestamp_test;
-- test overflows during CREATE INDEX with extreme date values
CREATE TABLE brin_date_test(a DATE);
-- insert values close to date minimum
INSERT INTO brin_date_test SELECT '4713-01-01 BC'::date + i FROM generate_series(1, 30) s(i);
-- insert values close to date minimum
INSERT INTO brin_date_test SELECT '5874897-12-01'::date + i FROM generate_series(1, 30) s(i);
CREATE INDEX ON brin_date_test USING brin (a date_minmax_multi_ops) WITH (pages_per_range=1);
SET enable_seqscan = off;
-- make sure the ranges were built correctly and 2023-01-01 eliminates all
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_date_test WHERE a = '2023-01-01'::date;
DROP TABLE brin_date_test;
RESET enable_seqscan;
-- test handling of infinite timestamp values
CREATE TABLE brin_timestamp_test(a TIMESTAMP);
INSERT INTO brin_timestamp_test VALUES ('-infinity'), ('infinity');
INSERT INTO brin_timestamp_test
SELECT i FROM generate_series('2000-01-01'::timestamp, '2000-02-09'::timestamp, '1 day'::interval) s(i);
CREATE INDEX ON brin_timestamp_test USING brin (a timestamp_minmax_multi_ops) WITH (pages_per_range=1);
SET enable_seqscan = off;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_timestamp_test WHERE a = '2023-01-01'::timestamp;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_timestamp_test WHERE a = '1900-01-01'::timestamp;
DROP TABLE brin_timestamp_test;
RESET enable_seqscan;
-- test handling of infinite date values
CREATE TABLE brin_date_test(a DATE);
INSERT INTO brin_date_test VALUES ('-infinity'), ('infinity');
INSERT INTO brin_date_test SELECT '2000-01-01'::date + i FROM generate_series(1, 40) s(i);
CREATE INDEX ON brin_date_test USING brin (a date_minmax_multi_ops) WITH (pages_per_range=1);
SET enable_seqscan = off;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_date_test WHERE a = '2023-01-01'::date;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_date_test WHERE a = '1900-01-01'::date;
DROP TABLE brin_date_test;
RESET enable_seqscan;
RESET datestyle;
-- test handling of overflow for interval values
CREATE TABLE brin_interval_test(a INTERVAL);
INSERT INTO brin_interval_test SELECT (i || ' years')::interval FROM generate_series(-178000000, -177999980) s(i);
INSERT INTO brin_interval_test SELECT (i || ' years')::interval FROM generate_series( 177999980, 178000000) s(i);
CREATE INDEX ON brin_interval_test USING brin (a interval_minmax_multi_ops) WITH (pages_per_range=1);
SET enable_seqscan = off;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_interval_test WHERE a = '-30 years'::interval;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_interval_test WHERE a = '30 years'::interval;
DROP TABLE brin_interval_test;
RESET enable_seqscan;
-- test handling of infinite interval values
CREATE TABLE brin_interval_test(a INTERVAL);
INSERT INTO brin_interval_test VALUES ('-infinity'), ('infinity');
INSERT INTO brin_interval_test SELECT (i || ' days')::interval FROM generate_series(100, 140) s(i);
CREATE INDEX ON brin_interval_test USING brin (a interval_minmax_multi_ops) WITH (pages_per_range=1);
SET enable_seqscan = off;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_interval_test WHERE a = '-30 years'::interval;
EXPLAIN (ANALYZE, TIMING OFF, COSTS OFF, SUMMARY OFF, BUFFERS OFF)
SELECT * FROM brin_interval_test WHERE a = '30 years'::interval;
DROP TABLE brin_interval_test;
RESET enable_seqscan;
RESET datestyle;
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