/usr/share/postgresql/10/extension/pg_trgm--unpackaged--1.0.sql is in postgresql-10 10.6-0ubuntu0.18.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | /* contrib/pg_trgm/pg_trgm--unpackaged--1.0.sql */
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION pg_trgm FROM unpackaged" to load this file. \quit
ALTER EXTENSION pg_trgm ADD function set_limit(real);
ALTER EXTENSION pg_trgm ADD function show_limit();
ALTER EXTENSION pg_trgm ADD function show_trgm(text);
ALTER EXTENSION pg_trgm ADD function similarity(text,text);
ALTER EXTENSION pg_trgm ADD function similarity_op(text,text);
ALTER EXTENSION pg_trgm ADD operator %(text,text);
ALTER EXTENSION pg_trgm ADD type gtrgm;
ALTER EXTENSION pg_trgm ADD function gtrgm_in(cstring);
ALTER EXTENSION pg_trgm ADD function gtrgm_out(gtrgm);
ALTER EXTENSION pg_trgm ADD function gtrgm_consistent(internal,text,integer,oid,internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_compress(internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_decompress(internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_penalty(internal,internal,internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_picksplit(internal,internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_union(bytea,internal);
ALTER EXTENSION pg_trgm ADD function gtrgm_same(gtrgm,gtrgm,internal);
ALTER EXTENSION pg_trgm ADD operator family gist_trgm_ops using gist;
ALTER EXTENSION pg_trgm ADD operator class gist_trgm_ops using gist;
ALTER EXTENSION pg_trgm ADD operator family gin_trgm_ops using gin;
ALTER EXTENSION pg_trgm ADD operator class gin_trgm_ops using gin;
-- These functions had different names/signatures in 9.0. We can't just
-- drop and recreate them because they are linked into the GIN opclass,
-- so we need some ugly hacks.
-- First, absorb them into the extension under their old names.
ALTER EXTENSION pg_trgm ADD function gin_extract_trgm(text, internal);
ALTER EXTENSION pg_trgm ADD function gin_extract_trgm(text, internal, int2, internal, internal);
ALTER EXTENSION pg_trgm ADD function gin_trgm_consistent(internal,smallint,text,integer,internal,internal);
-- Fix the names, and then do CREATE OR REPLACE to adjust the function
-- bodies to be correct (ie, reference the correct C symbol).
ALTER FUNCTION gin_extract_trgm(text, internal)
RENAME TO gin_extract_value_trgm;
CREATE OR REPLACE FUNCTION gin_extract_value_trgm(text, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
ALTER FUNCTION gin_extract_trgm(text, internal, int2, internal, internal)
RENAME TO gin_extract_query_trgm;
CREATE OR REPLACE FUNCTION gin_extract_query_trgm(text, internal, int2, internal, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- gin_trgm_consistent didn't change name.
-- Last, fix the parameter lists by means of direct UPDATE on the pg_proc
-- entries. This is ugly as can be, but there's no other way to do it
-- while preserving the identities (OIDs) of the functions.
UPDATE pg_catalog.pg_proc
SET pronargs = 7, proargtypes = '25 2281 21 2281 2281 2281 2281'
WHERE oid = 'gin_extract_query_trgm(text,internal,int2,internal,internal)'::pg_catalog.regprocedure;
UPDATE pg_catalog.pg_proc
SET pronargs = 8, proargtypes = '2281 21 25 23 2281 2281 2281 2281'
WHERE oid = 'gin_trgm_consistent(internal,smallint,text,integer,internal,internal)'::pg_catalog.regprocedure;
-- These were not in 9.0:
CREATE FUNCTION similarity_dist(text,text)
RETURNS float4
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT IMMUTABLE;
CREATE OPERATOR <-> (
LEFTARG = text,
RIGHTARG = text,
PROCEDURE = similarity_dist,
COMMUTATOR = '<->'
);
CREATE FUNCTION gtrgm_distance(internal,text,int,oid)
RETURNS float8
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
-- Add new stuff to the operator classes. See comment in pg_trgm--1.0.sql.
ALTER OPERATOR FAMILY gist_trgm_ops USING gist ADD
OPERATOR 2 <-> (text, text) FOR ORDER BY pg_catalog.float_ops,
OPERATOR 3 pg_catalog.~~ (text, text),
OPERATOR 4 pg_catalog.~~* (text, text),
FUNCTION 8 (text, text) gtrgm_distance (internal, text, int, oid);
ALTER OPERATOR FAMILY gin_trgm_ops USING gin ADD
OPERATOR 3 pg_catalog.~~ (text, text),
OPERATOR 4 pg_catalog.~~* (text, text);
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