mirror of
https://github.com/postgres/postgres.git
synced 2025-10-31 10:30:33 +03:00
30e2c42e00
about best practice for including the module creation scripts: to wit that you should suppress NOTICE messages. This avoids creating regression failures by adding or removing comment lines in the module scripts.
45 lines
1.7 KiB
PL/PgSQL
45 lines
1.7 KiB
PL/PgSQL
--
|
|
-- first, define the datatype. Turn off echoing so that expected file
|
|
-- does not depend on contents of pg_tgrm.sql.
|
|
--
|
|
SET client_min_messages = warning;
|
|
\set ECHO none
|
|
\i pg_trgm.sql
|
|
\set ECHO all
|
|
RESET client_min_messages;
|
|
|
|
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 ');
|
|
|
|
CREATE TABLE test_trgm(t text);
|
|
|
|
\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;
|
|
|
|
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;
|
|
|
|
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;
|
|
|