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SET search_path = public;
BEGIN;
create function set_limit(float4)
returns float4
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
create function show_limit()
returns float4
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
create function show_trgm(text)
returns _text
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
create function similarity(text,text)
returns float4
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
create function similarity_op(text,text)
returns bool
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT IMMUTABLE;
CREATE OPERATOR % (
LEFTARG = text,
RIGHTARG = text,
PROCEDURE = similarity_op,
COMMUTATOR = '%',
RESTRICT = contsel,
JOIN = contjoinsel
);
--gist key
CREATE FUNCTION gtrgm_in(cstring)
RETURNS gtrgm
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT;
CREATE FUNCTION gtrgm_out(gtrgm)
RETURNS cstring
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT;
CREATE TYPE gtrgm (
INTERNALLENGTH = -1,
INPUT = gtrgm_in,
OUTPUT = gtrgm_out
);
-- support functions
CREATE FUNCTION gtrgm_consistent(gtrgm,internal,int4)
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE FUNCTION gtrgm_compress(internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE FUNCTION gtrgm_decompress(internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE FUNCTION gtrgm_penalty(internal,internal,internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C RETURNS NULL ON NULL INPUT;
CREATE FUNCTION gtrgm_picksplit(internal, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE FUNCTION gtrgm_union(bytea, internal)
RETURNS _int4
AS 'MODULE_PATHNAME'
LANGUAGE C;
CREATE FUNCTION gtrgm_same(gtrgm, gtrgm, internal)
RETURNS internal
AS 'MODULE_PATHNAME'
LANGUAGE C;
-- create the operator class
CREATE OPERATOR CLASS gist_trgm_ops
FOR TYPE text USING gist
AS
OPERATOR 1 % (text, text),
FUNCTION 1 gtrgm_consistent (gtrgm, internal, int4),
FUNCTION 2 gtrgm_union (bytea, internal),
FUNCTION 3 gtrgm_compress (internal),
FUNCTION 4 gtrgm_decompress (internal),
FUNCTION 5 gtrgm_penalty (internal, internal, internal),
FUNCTION 6 gtrgm_picksplit (internal, internal),
FUNCTION 7 gtrgm_same (gtrgm, gtrgm, internal),
STORAGE gtrgm;
COMMIT;
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