postgresql/contrib/citext/citext--1.0.sql

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/* contrib/citext/citext--1.0.sql */
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION citext" to load this file. \quit
--
-- PostgreSQL code for CITEXT.
--
-- Most I/O functions, and a few others, piggyback on the "text" type
-- functions via the implicit cast to text.
--
--
-- Shell type to keep things a bit quieter.
--
CREATE TYPE citext;
--
-- Input and output functions.
--
CREATE FUNCTION citextin(cstring)
RETURNS citext
AS 'textin'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION citextout(citext)
RETURNS cstring
AS 'textout'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION citextrecv(internal)
RETURNS citext
AS 'textrecv'
LANGUAGE internal STABLE STRICT;
CREATE FUNCTION citextsend(citext)
RETURNS bytea
AS 'textsend'
LANGUAGE internal STABLE STRICT;
--
-- The type itself.
--
CREATE TYPE citext (
INPUT = citextin,
OUTPUT = citextout,
RECEIVE = citextrecv,
SEND = citextsend,
INTERNALLENGTH = VARIABLE,
STORAGE = extended,
-- make it a non-preferred member of string type category
CATEGORY = 'S',
PREFERRED = false,
COLLATABLE = true
);
--
-- Type casting functions for those situations where the I/O casts don't
-- automatically kick in.
--
CREATE FUNCTION citext(bpchar)
RETURNS citext
AS 'rtrim1'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION citext(boolean)
RETURNS citext
AS 'booltext'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION citext(inet)
RETURNS citext
AS 'network_show'
LANGUAGE internal IMMUTABLE STRICT;
--
-- Implicit and assignment type casts.
--
CREATE CAST (citext AS text) WITHOUT FUNCTION AS IMPLICIT;
CREATE CAST (citext AS varchar) WITHOUT FUNCTION AS IMPLICIT;
CREATE CAST (citext AS bpchar) WITHOUT FUNCTION AS ASSIGNMENT;
CREATE CAST (text AS citext) WITHOUT FUNCTION AS ASSIGNMENT;
CREATE CAST (varchar AS citext) WITHOUT FUNCTION AS ASSIGNMENT;
CREATE CAST (bpchar AS citext) WITH FUNCTION citext(bpchar) AS ASSIGNMENT;
CREATE CAST (boolean AS citext) WITH FUNCTION citext(boolean) AS ASSIGNMENT;
CREATE CAST (inet AS citext) WITH FUNCTION citext(inet) AS ASSIGNMENT;
--
-- Operator Functions.
--
CREATE FUNCTION citext_eq( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_ne( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_lt( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_le( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_gt( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_ge( citext, citext )
RETURNS bool
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
--
-- Operators.
--
CREATE OPERATOR = (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
COMMUTATOR = =,
NEGATOR = <>,
PROCEDURE = citext_eq,
RESTRICT = eqsel,
JOIN = eqjoinsel,
HASHES,
MERGES
);
CREATE OPERATOR <> (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
NEGATOR = =,
COMMUTATOR = <>,
PROCEDURE = citext_ne,
RESTRICT = neqsel,
JOIN = neqjoinsel
);
CREATE OPERATOR < (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
NEGATOR = >=,
COMMUTATOR = >,
PROCEDURE = citext_lt,
RESTRICT = scalarltsel,
JOIN = scalarltjoinsel
);
CREATE OPERATOR <= (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
NEGATOR = >,
COMMUTATOR = >=,
PROCEDURE = citext_le,
RESTRICT = scalarltsel,
JOIN = scalarltjoinsel
);
CREATE OPERATOR >= (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
NEGATOR = <,
COMMUTATOR = <=,
PROCEDURE = citext_ge,
RESTRICT = scalargtsel,
JOIN = scalargtjoinsel
);
CREATE OPERATOR > (
LEFTARG = CITEXT,
RIGHTARG = CITEXT,
NEGATOR = <=,
COMMUTATOR = <,
PROCEDURE = citext_gt,
RESTRICT = scalargtsel,
JOIN = scalargtjoinsel
);
--
-- Support functions for indexing.
--
CREATE FUNCTION citext_cmp(citext, citext)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT IMMUTABLE;
CREATE FUNCTION citext_hash(citext)
RETURNS int4
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT IMMUTABLE;
--
-- The btree indexing operator class.
--
CREATE OPERATOR CLASS citext_ops
DEFAULT FOR TYPE CITEXT USING btree AS
OPERATOR 1 < (citext, citext),
OPERATOR 2 <= (citext, citext),
OPERATOR 3 = (citext, citext),
OPERATOR 4 >= (citext, citext),
OPERATOR 5 > (citext, citext),
FUNCTION 1 citext_cmp(citext, citext);
--
-- The hash indexing operator class.
--
CREATE OPERATOR CLASS citext_ops
DEFAULT FOR TYPE citext USING hash AS
OPERATOR 1 = (citext, citext),
FUNCTION 1 citext_hash(citext);
--
-- Aggregates.
--
CREATE FUNCTION citext_smaller(citext, citext)
RETURNS citext
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION citext_larger(citext, citext)
RETURNS citext
AS 'MODULE_PATHNAME'
LANGUAGE C IMMUTABLE STRICT;
CREATE AGGREGATE min(citext) (
SFUNC = citext_smaller,
STYPE = citext,
SORTOP = <
);
CREATE AGGREGATE max(citext) (
SFUNC = citext_larger,
STYPE = citext,
SORTOP = >
);
--
-- CITEXT pattern matching.
--
CREATE FUNCTION texticlike(citext, citext)
RETURNS bool AS 'texticlike'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticnlike(citext, citext)
RETURNS bool AS 'texticnlike'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticregexeq(citext, citext)
RETURNS bool AS 'texticregexeq'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticregexne(citext, citext)
RETURNS bool AS 'texticregexne'
LANGUAGE internal IMMUTABLE STRICT;
CREATE OPERATOR ~ (
PROCEDURE = texticregexeq,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = !~,
RESTRICT = icregexeqsel,
JOIN = icregexeqjoinsel
);
CREATE OPERATOR ~* (
PROCEDURE = texticregexeq,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = !~*,
RESTRICT = icregexeqsel,
JOIN = icregexeqjoinsel
);
CREATE OPERATOR !~ (
PROCEDURE = texticregexne,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = ~,
RESTRICT = icregexnesel,
JOIN = icregexnejoinsel
);
CREATE OPERATOR !~* (
PROCEDURE = texticregexne,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = ~*,
RESTRICT = icregexnesel,
JOIN = icregexnejoinsel
);
CREATE OPERATOR ~~ (
PROCEDURE = texticlike,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = !~~,
RESTRICT = iclikesel,
JOIN = iclikejoinsel
);
CREATE OPERATOR ~~* (
PROCEDURE = texticlike,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = !~~*,
RESTRICT = iclikesel,
JOIN = iclikejoinsel
);
CREATE OPERATOR !~~ (
PROCEDURE = texticnlike,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = ~~,
RESTRICT = icnlikesel,
JOIN = icnlikejoinsel
);
CREATE OPERATOR !~~* (
PROCEDURE = texticnlike,
LEFTARG = citext,
RIGHTARG = citext,
NEGATOR = ~~*,
RESTRICT = icnlikesel,
JOIN = icnlikejoinsel
);
--
-- Matching citext to text.
--
CREATE FUNCTION texticlike(citext, text)
RETURNS bool AS 'texticlike'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticnlike(citext, text)
RETURNS bool AS 'texticnlike'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticregexeq(citext, text)
RETURNS bool AS 'texticregexeq'
LANGUAGE internal IMMUTABLE STRICT;
CREATE FUNCTION texticregexne(citext, text)
RETURNS bool AS 'texticregexne'
LANGUAGE internal IMMUTABLE STRICT;
CREATE OPERATOR ~ (
PROCEDURE = texticregexeq,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = !~,
RESTRICT = icregexeqsel,
JOIN = icregexeqjoinsel
);
CREATE OPERATOR ~* (
PROCEDURE = texticregexeq,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = !~*,
RESTRICT = icregexeqsel,
JOIN = icregexeqjoinsel
);
CREATE OPERATOR !~ (
PROCEDURE = texticregexne,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = ~,
RESTRICT = icregexnesel,
JOIN = icregexnejoinsel
);
CREATE OPERATOR !~* (
PROCEDURE = texticregexne,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = ~*,
RESTRICT = icregexnesel,
JOIN = icregexnejoinsel
);
CREATE OPERATOR ~~ (
PROCEDURE = texticlike,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = !~~,
RESTRICT = iclikesel,
JOIN = iclikejoinsel
);
CREATE OPERATOR ~~* (
PROCEDURE = texticlike,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = !~~*,
RESTRICT = iclikesel,
JOIN = iclikejoinsel
);
CREATE OPERATOR !~~ (
PROCEDURE = texticnlike,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = ~~,
RESTRICT = icnlikesel,
JOIN = icnlikejoinsel
);
CREATE OPERATOR !~~* (
PROCEDURE = texticnlike,
LEFTARG = citext,
RIGHTARG = text,
NEGATOR = ~~*,
RESTRICT = icnlikesel,
JOIN = icnlikejoinsel
);
--
-- Matching citext in string comparison functions.
-- XXX TODO Ideally these would be implemented in C.
--
CREATE FUNCTION regexp_matches( citext, citext ) RETURNS TEXT[] AS $$
SELECT pg_catalog.regexp_matches( $1::pg_catalog.text, $2::pg_catalog.text, 'i' );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_matches( citext, citext, text ) RETURNS TEXT[] AS $$
SELECT pg_catalog.regexp_matches( $1::pg_catalog.text, $2::pg_catalog.text, CASE WHEN pg_catalog.strpos($3, 'c') = 0 THEN $3 || 'i' ELSE $3 END );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_replace( citext, citext, text ) returns TEXT AS $$
SELECT pg_catalog.regexp_replace( $1::pg_catalog.text, $2::pg_catalog.text, $3, 'i');
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_replace( citext, citext, text, text ) returns TEXT AS $$
SELECT pg_catalog.regexp_replace( $1::pg_catalog.text, $2::pg_catalog.text, $3, CASE WHEN pg_catalog.strpos($4, 'c') = 0 THEN $4 || 'i' ELSE $4 END);
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_split_to_array( citext, citext ) RETURNS TEXT[] AS $$
SELECT pg_catalog.regexp_split_to_array( $1::pg_catalog.text, $2::pg_catalog.text, 'i' );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_split_to_array( citext, citext, text ) RETURNS TEXT[] AS $$
SELECT pg_catalog.regexp_split_to_array( $1::pg_catalog.text, $2::pg_catalog.text, CASE WHEN pg_catalog.strpos($3, 'c') = 0 THEN $3 || 'i' ELSE $3 END );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_split_to_table( citext, citext ) RETURNS SETOF TEXT AS $$
SELECT pg_catalog.regexp_split_to_table( $1::pg_catalog.text, $2::pg_catalog.text, 'i' );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION regexp_split_to_table( citext, citext, text ) RETURNS SETOF TEXT AS $$
SELECT pg_catalog.regexp_split_to_table( $1::pg_catalog.text, $2::pg_catalog.text, CASE WHEN pg_catalog.strpos($3, 'c') = 0 THEN $3 || 'i' ELSE $3 END );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION strpos( citext, citext ) RETURNS INT AS $$
SELECT pg_catalog.strpos( pg_catalog.lower( $1::pg_catalog.text ), pg_catalog.lower( $2::pg_catalog.text ) );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION replace( citext, citext, citext ) RETURNS TEXT AS $$
SELECT pg_catalog.regexp_replace( $1::pg_catalog.text, pg_catalog.regexp_replace($2::pg_catalog.text, '([^a-zA-Z_0-9])', E'\\\\\\1', 'g'), $3::pg_catalog.text, 'gi' );
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION split_part( citext, citext, int ) RETURNS TEXT AS $$
SELECT (pg_catalog.regexp_split_to_array( $1::pg_catalog.text, pg_catalog.regexp_replace($2::pg_catalog.text, '([^a-zA-Z_0-9])', E'\\\\\\1', 'g'), 'i'))[$3];
$$ LANGUAGE SQL IMMUTABLE STRICT;
CREATE FUNCTION translate( citext, citext, text ) RETURNS TEXT AS $$
SELECT pg_catalog.translate( pg_catalog.translate( $1::pg_catalog.text, pg_catalog.lower($2::pg_catalog.text), $3), pg_catalog.upper($2::pg_catalog.text), $3);
$$ LANGUAGE SQL IMMUTABLE STRICT;