mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-28 17:17:18 +02:00
155 lines
6.2 KiB
SQL
155 lines
6.2 KiB
SQL
CREATE EXTENSION pg_trgm;
|
|
|
|
-- Check whether any of our opclasses fail amvalidate
|
|
SELECT amname, opcname
|
|
FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
|
|
WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
|
|
|
|
--backslash is used in tests below, installcheck will fail if
|
|
--standard_conforming_string is off
|
|
set standard_conforming_strings=on;
|
|
|
|
select show_trgm('');
|
|
select show_trgm('(*&^$@%@');
|
|
select show_trgm('a b c');
|
|
select show_trgm(' a b c ');
|
|
select show_trgm('aA bB cC');
|
|
select show_trgm(' aA bB cC ');
|
|
select show_trgm('a b C0*%^');
|
|
|
|
select similarity('wow','WOWa ');
|
|
select similarity('wow',' WOW ');
|
|
|
|
select similarity('---', '####---');
|
|
|
|
CREATE TABLE test_trgm(t text COLLATE "C");
|
|
|
|
\copy test_trgm from 'data/trgm.data'
|
|
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
|
|
create index trgm_idx on test_trgm using gist (t gist_trgm_ops);
|
|
set enable_seqscan=off;
|
|
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
explain (costs off)
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
|
|
drop index trgm_idx;
|
|
create index trgm_idx on test_trgm using gin (t gin_trgm_ops);
|
|
set enable_seqscan=off;
|
|
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
|
|
create table test2(t text COLLATE "C");
|
|
insert into test2 values ('abcdef');
|
|
insert into test2 values ('quark');
|
|
insert into test2 values (' z foo bar');
|
|
insert into test2 values ('/123/-45/');
|
|
create index test2_idx_gin on test2 using gin (t gin_trgm_ops);
|
|
set enable_seqscan=off;
|
|
explain (costs off)
|
|
select * from test2 where t like '%BCD%';
|
|
explain (costs off)
|
|
select * from test2 where t ilike '%BCD%';
|
|
select * from test2 where t like '%BCD%';
|
|
select * from test2 where t like '%bcd%';
|
|
select * from test2 where t like E'%\\bcd%';
|
|
select * from test2 where t ilike '%BCD%';
|
|
select * from test2 where t ilike 'qua%';
|
|
select * from test2 where t like '%z foo bar%';
|
|
select * from test2 where t like ' z foo%';
|
|
explain (costs off)
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
explain (costs off)
|
|
select * from test2 where t ~* 'DEF';
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
select * from test2 where t ~ 'a[bc]+d';
|
|
select * from test2 where t ~ '(abc)*$';
|
|
select * from test2 where t ~* 'DEF';
|
|
select * from test2 where t ~ 'dEf';
|
|
select * from test2 where t ~* '^q';
|
|
select * from test2 where t ~* '[abc]{3}[def]{3}';
|
|
select * from test2 where t ~* 'ab[a-z]{3}';
|
|
select * from test2 where t ~* '(^| )qua';
|
|
select * from test2 where t ~ 'q.*rk$';
|
|
select * from test2 where t ~ 'q';
|
|
select * from test2 where t ~ '[a-z]{3}';
|
|
select * from test2 where t ~* '(a{10}|b{10}|c{10}){10}';
|
|
select * from test2 where t ~ 'z foo bar';
|
|
select * from test2 where t ~ ' z foo bar';
|
|
select * from test2 where t ~ ' z foo bar';
|
|
select * from test2 where t ~ ' z foo';
|
|
select * from test2 where t ~ 'qua(?!foo)';
|
|
select * from test2 where t ~ '/\d+/-\d';
|
|
drop index test2_idx_gin;
|
|
|
|
create index test2_idx_gist on test2 using gist (t gist_trgm_ops);
|
|
set enable_seqscan=off;
|
|
explain (costs off)
|
|
select * from test2 where t like '%BCD%';
|
|
explain (costs off)
|
|
select * from test2 where t ilike '%BCD%';
|
|
select * from test2 where t like '%BCD%';
|
|
select * from test2 where t like '%bcd%';
|
|
select * from test2 where t like E'%\\bcd%';
|
|
select * from test2 where t ilike '%BCD%';
|
|
select * from test2 where t ilike 'qua%';
|
|
select * from test2 where t like '%z foo bar%';
|
|
select * from test2 where t like ' z foo%';
|
|
explain (costs off)
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
explain (costs off)
|
|
select * from test2 where t ~* 'DEF';
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
select * from test2 where t ~ 'a[bc]+d';
|
|
select * from test2 where t ~ '(abc)*$';
|
|
select * from test2 where t ~* 'DEF';
|
|
select * from test2 where t ~ 'dEf';
|
|
select * from test2 where t ~* '^q';
|
|
select * from test2 where t ~* '[abc]{3}[def]{3}';
|
|
select * from test2 where t ~* 'ab[a-z]{3}';
|
|
select * from test2 where t ~* '(^| )qua';
|
|
select * from test2 where t ~ 'q.*rk$';
|
|
select * from test2 where t ~ 'q';
|
|
select * from test2 where t ~ '[a-z]{3}';
|
|
select * from test2 where t ~* '(a{10}|b{10}|c{10}){10}';
|
|
select * from test2 where t ~ 'z foo bar';
|
|
select * from test2 where t ~ ' z foo bar';
|
|
select * from test2 where t ~ ' z foo bar';
|
|
select * from test2 where t ~ ' z foo';
|
|
select * from test2 where t ~ 'qua(?!foo)';
|
|
select * from test2 where t ~ '/\d+/-\d';
|
|
|
|
-- Check similarity threshold (bug #14202)
|
|
|
|
CREATE TEMP TABLE restaurants (city text);
|
|
INSERT INTO restaurants SELECT 'Warsaw' FROM generate_series(1, 10000);
|
|
INSERT INTO restaurants SELECT 'Szczecin' FROM generate_series(1, 10000);
|
|
CREATE INDEX ON restaurants USING gist(city gist_trgm_ops);
|
|
|
|
-- Similarity of the two names (for reference).
|
|
SELECT similarity('Szczecin', 'Warsaw');
|
|
|
|
-- Should get only 'Warsaw' for either setting of set_limit.
|
|
EXPLAIN (COSTS OFF)
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|
|
SELECT set_limit(0.3);
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|
|
SELECT set_limit(0.5);
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|