mirror of
https://github.com/postgres/postgres.git
synced 2025-08-12 15:23:02 +03:00
config
contrib
adminpack
amcheck
auth_delay
auto_explain
bloom
expected
sql
bloom.sql
t
.gitignore
Makefile
blcost.c
blinsert.c
bloom--1.0.sql
bloom.control
bloom.h
blscan.c
blutils.c
blvacuum.c
blvalidate.c
btree_gin
btree_gist
citext
cube
dblink
dict_int
dict_xsyn
earthdistance
file_fdw
fuzzystrmatch
hstore
hstore_plperl
hstore_plpython
intagg
intarray
isn
jsonb_plperl
jsonb_plpython
lo
ltree
ltree_plpython
oid2name
pageinspect
passwordcheck
pg_buffercache
pg_freespacemap
pg_prewarm
pg_standby
pg_stat_statements
pg_trgm
pg_visibility
pgcrypto
pgrowlocks
pgstattuple
postgres_fdw
seg
sepgsql
spi
sslinfo
start-scripts
tablefunc
tcn
test_decoding
tsm_system_rows
tsm_system_time
unaccent
uuid-ossp
vacuumlo
xml2
Makefile
README
contrib-global.mk
doc
src
.dir-locals.el
.editorconfig
.gitattributes
.gitignore
COPYRIGHT
GNUmakefile.in
HISTORY
Makefile
README
README.git
aclocal.m4
configure
configure.in
736b84eede
In-core relation options can use a custom lock mode since 47167b7, that
has lowered the lock available for some autovacuum parameters. However
it forgot to consider custom relation options. This causes failures
with ALTER TABLE SET when changing a custom relation option, as its lock
is not defined. The existing APIs to define a custom reloption does not
allow to define a custom lock mode, so enforce its initialization to
AccessExclusiveMode which should be safe enough in all cases. An
upcoming patch will extend the existing APIs to allow a custom lock mode
to be defined.
The problem can be reproduced with bloom indexes, so add a test there.
Reported-by: Nikolay Sharplov
Analyzed-by: Thomas Munro, Michael Paquier
Author: Michael Paquier
Reviewed-by: Kuntal Ghosh
Discussion: https://postgr.es/m/20190920013831.GD1844@paquier.xyz
Backpatch-through: 9.6
96 lines
2.7 KiB
SQL
96 lines
2.7 KiB
SQL
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);
|
|
ALTER INDEX bloomidx SET (length=80);
|
|
|
|
SET enable_seqscan=on;
|
|
SET enable_bitmapscan=off;
|
|
SET enable_indexscan=off;
|
|
|
|
SELECT count(*) FROM tst WHERE i = 7;
|
|
SELECT count(*) FROM tst WHERE t = '5';
|
|
SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
SET enable_seqscan=off;
|
|
SET enable_bitmapscan=on;
|
|
SET enable_indexscan=on;
|
|
|
|
EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE i = 7;
|
|
EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE t = '5';
|
|
EXPLAIN (COSTS OFF) SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
SELECT count(*) FROM tst WHERE i = 7;
|
|
SELECT count(*) FROM tst WHERE t = '5';
|
|
SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
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;
|
|
SELECT count(*) FROM tst WHERE t = '5';
|
|
SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
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;
|
|
SELECT count(*) FROM tst WHERE t = '5';
|
|
SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
VACUUM FULL tst;
|
|
|
|
SELECT count(*) FROM tst WHERE i = 7;
|
|
SELECT count(*) FROM tst WHERE t = '5';
|
|
SELECT count(*) FROM tst WHERE i = 7 AND t = '5';
|
|
|
|
-- 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;
|
|
EXPLAIN (COSTS OFF) SELECT count(*) FROM tstu WHERE t = '5';
|
|
EXPLAIN (COSTS OFF) SELECT count(*) FROM tstu WHERE i = 7 AND t = '5';
|
|
|
|
SELECT count(*) FROM tstu WHERE i = 7;
|
|
SELECT count(*) FROM tstu WHERE t = '5';
|
|
SELECT count(*) FROM tstu WHERE i = 7 AND t = '5';
|
|
|
|
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;
|
|
|
|
--
|
|
-- relation options
|
|
--
|
|
DROP INDEX bloomidx;
|
|
CREATE INDEX bloomidx ON tst USING bloom (i, t) WITH (length=7, col1=4);
|
|
SELECT reloptions FROM pg_class WHERE oid = 'bloomidx'::regclass;
|
|
-- check for min and max values
|
|
\set VERBOSITY terse
|
|
CREATE INDEX bloomidx2 ON tst USING bloom (i, t) WITH (length=0);
|
|
CREATE INDEX bloomidx2 ON tst USING bloom (i, t) WITH (col1=0);
|