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"consistent" functions, and remove pg_amop.opreqcheck, as per recent discussion. The main immediate benefit of this is that we no longer need 8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery searches on GIN indexes. In future it should be possible to optimize some other queries better than is done now, by detecting at runtime whether the index match is exact or not. Tom Lane, after an idea of Heikki's, and with some help from Teodor.
133 lines
3.6 KiB
MySQL
133 lines
3.6 KiB
MySQL
/* $PostgreSQL: pgsql/contrib/pg_trgm/pg_trgm.sql.in,v 1.8 2008/04/14 17:05:32 tgl Exp $ */
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-- Adjust this setting to control where the objects get created.
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SET search_path = public;
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CREATE OR REPLACE FUNCTION set_limit(float4)
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RETURNS float4
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT VOLATILE;
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CREATE OR REPLACE FUNCTION show_limit()
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RETURNS float4
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT STABLE;
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CREATE OR REPLACE FUNCTION show_trgm(text)
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RETURNS _text
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT IMMUTABLE;
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CREATE OR REPLACE FUNCTION similarity(text,text)
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RETURNS float4
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT IMMUTABLE;
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CREATE OR REPLACE FUNCTION similarity_op(text,text)
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT STABLE;
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CREATE OPERATOR % (
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LEFTARG = text,
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RIGHTARG = text,
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PROCEDURE = similarity_op,
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COMMUTATOR = '%',
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RESTRICT = contsel,
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JOIN = contjoinsel
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);
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-- gist key
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CREATE OR REPLACE FUNCTION gtrgm_in(cstring)
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RETURNS gtrgm
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT;
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CREATE OR REPLACE FUNCTION gtrgm_out(gtrgm)
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RETURNS cstring
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT;
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CREATE TYPE gtrgm (
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INTERNALLENGTH = -1,
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INPUT = gtrgm_in,
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OUTPUT = gtrgm_out
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);
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-- support functions for gist
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CREATE OR REPLACE FUNCTION gtrgm_consistent(internal,text,int,oid,internal)
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_compress(internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_decompress(internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_penalty(internal,internal,internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_picksplit(internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_union(bytea, internal)
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RETURNS _int4
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gtrgm_same(gtrgm, gtrgm, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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-- create the operator class for gist
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CREATE OPERATOR CLASS gist_trgm_ops
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FOR TYPE text USING gist
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AS
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OPERATOR 1 % (text, text),
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FUNCTION 1 gtrgm_consistent (internal, text, int, oid, internal),
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FUNCTION 2 gtrgm_union (bytea, internal),
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FUNCTION 3 gtrgm_compress (internal),
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FUNCTION 4 gtrgm_decompress (internal),
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FUNCTION 5 gtrgm_penalty (internal, internal, internal),
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FUNCTION 6 gtrgm_picksplit (internal, internal),
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FUNCTION 7 gtrgm_same (gtrgm, gtrgm, internal),
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STORAGE gtrgm;
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-- support functions for gin
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CREATE OR REPLACE FUNCTION gin_extract_trgm(text, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gin_extract_trgm(text, internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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CREATE OR REPLACE FUNCTION gin_trgm_consistent(internal, int2, text, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE;
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-- create the operator class for gin
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CREATE OPERATOR CLASS gin_trgm_ops
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FOR TYPE text USING gin
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AS
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OPERATOR 1 % (text, text),
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FUNCTION 1 btint4cmp (int4, int4),
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FUNCTION 2 gin_extract_trgm (text, internal),
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FUNCTION 3 gin_extract_trgm (text, internal, internal),
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FUNCTION 4 gin_trgm_consistent (internal, int2, text, internal),
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STORAGE int4;
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