46 lines
2.7 KiB
MySQL
46 lines
2.7 KiB
MySQL
|
CREATE TABLE test_trgm2(t text COLLATE "C");
|
||
|
|
|
||
|
|
\copy test_trgm2 from 'data/trgm2.data'
|
||
|
|
|
||
|
|
-- reduce noise
|
||
|
|
set extra_float_digits = 0;
|
||
|
|
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
|
||
|
|
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
|
||
|
|
|
||
|
|
create index trgm_idx2 on test_trgm2 using gist (t gist_trgm_ops);
|
||
|
|
set enable_seqscan=off;
|
||
|
|
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
|
||
|
|
|
||
|
|
explain (costs off)
|
||
|
|
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
|
||
|
|
select t <->> 'Kabankala', t from test_trgm2 order by t <->> 'Kabankala' limit 7;
|
||
|
|
|
||
|
|
drop index trgm_idx2;
|
||
|
|
create index trgm_idx2 on test_trgm2 using gin (t gin_trgm_ops);
|
||
|
|
set enable_seqscan=off;
|
||
|
|
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
|
||
|
|
|
||
|
|
set "pg_trgm.word_similarity_threshold" to 0.5;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
|
||
|
|
|
||
|
|
set "pg_trgm.word_similarity_threshold" to 0.3;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where 'Baykal' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where 'Kabankala' <% t order by sml desc, t;
|
||
|
|
select t,word_similarity('Baykal',t) as sml from test_trgm2 where t %> 'Baykal' order by sml desc, t;
|
||
|
|
select t,word_similarity('Kabankala',t) as sml from test_trgm2 where t %> 'Kabankala' order by sml desc, t;
|