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by putting it into the standard string category, we cause casts from citext to text to be recognized as "preferred" casts. This eliminates the need for creation of alias functions and operators that only serve to prevent ambiguous-function errors; get rid of the ones that were in the original commit.
423 lines
9.0 KiB
MySQL
423 lines
9.0 KiB
MySQL
/* $PostgreSQL: pgsql/contrib/citext/citext.sql.in,v 1.2 2008/07/30 17:08:52 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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--
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-- PostgreSQL code for CITEXT.
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--
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-- Most I/O functions, and a few others, piggyback on the "text" type
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-- functions via the implicit cast to text.
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--
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--
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-- Shell type to keep things a bit quieter.
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--
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CREATE TYPE citext;
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--
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-- Input and output functions.
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--
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CREATE OR REPLACE FUNCTION citextin(cstring)
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RETURNS citext
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AS 'textin'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citextout(citext)
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RETURNS cstring
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AS 'textout'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citextrecv(internal)
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RETURNS citext
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AS 'textrecv'
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LANGUAGE 'internal' STABLE STRICT;
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CREATE OR REPLACE FUNCTION citextsend(citext)
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RETURNS bytea
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AS 'textsend'
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LANGUAGE 'internal' STABLE STRICT;
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--
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-- The type itself.
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--
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CREATE TYPE citext (
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INPUT = citextin,
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OUTPUT = citextout,
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RECEIVE = citextrecv,
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SEND = citextsend,
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INTERNALLENGTH = VARIABLE,
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STORAGE = extended,
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-- make it a non-preferred member of string type category
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CATEGORY = 'S',
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PREFERRED = false
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);
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--
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-- A single cast function, since bpchar needs to have its whitespace trimmed
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-- before it's cast to citext.
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--
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CREATE OR REPLACE FUNCTION citext(bpchar)
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RETURNS citext
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AS 'rtrim1'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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--
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-- Implicit and assignment type casts.
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--
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CREATE CAST (citext AS text) WITHOUT FUNCTION AS IMPLICIT;
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CREATE CAST (citext AS varchar) WITHOUT FUNCTION AS IMPLICIT;
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CREATE CAST (citext AS bpchar) WITHOUT FUNCTION AS ASSIGNMENT;
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CREATE CAST (text AS citext) WITHOUT FUNCTION AS ASSIGNMENT;
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CREATE CAST (varchar AS citext) WITHOUT FUNCTION AS ASSIGNMENT;
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CREATE CAST (bpchar AS citext) WITH FUNCTION citext(bpchar) AS ASSIGNMENT;
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--
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-- Operator Functions.
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--
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CREATE OR REPLACE FUNCTION citext_eq( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_ne( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_lt( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_le( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_gt( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_ge( citext, citext )
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE C IMMUTABLE STRICT;
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--
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-- Operators.
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--
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CREATE OPERATOR = (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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COMMUTATOR = =,
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NEGATOR = <>,
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PROCEDURE = citext_eq,
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RESTRICT = eqsel,
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JOIN = eqjoinsel,
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HASHES,
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MERGES
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);
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CREATE OPERATOR <> (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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NEGATOR = =,
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COMMUTATOR = <>,
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PROCEDURE = citext_ne,
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RESTRICT = neqsel,
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JOIN = neqjoinsel
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);
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CREATE OPERATOR < (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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NEGATOR = >=,
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COMMUTATOR = >,
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PROCEDURE = citext_lt,
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RESTRICT = scalarltsel,
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JOIN = scalarltjoinsel
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);
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CREATE OPERATOR <= (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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NEGATOR = >,
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COMMUTATOR = >=,
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PROCEDURE = citext_le,
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RESTRICT = scalarltsel,
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JOIN = scalarltjoinsel
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);
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CREATE OPERATOR >= (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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NEGATOR = <,
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COMMUTATOR = <=,
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PROCEDURE = citext_ge,
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RESTRICT = scalargtsel,
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JOIN = scalargtjoinsel
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);
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CREATE OPERATOR > (
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LEFTARG = CITEXT,
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RIGHTARG = CITEXT,
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NEGATOR = <=,
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COMMUTATOR = <,
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PROCEDURE = citext_gt,
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RESTRICT = scalargtsel,
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JOIN = scalargtjoinsel
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);
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--
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-- Support functions for indexing.
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--
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CREATE OR REPLACE FUNCTION citext_cmp(citext, citext)
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RETURNS int4
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT IMMUTABLE;
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CREATE OR REPLACE FUNCTION citext_hash(citext)
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RETURNS int4
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AS 'MODULE_PATHNAME'
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LANGUAGE C STRICT IMMUTABLE;
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--
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-- The btree indexing operator class.
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--
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CREATE OPERATOR CLASS citext_ops
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DEFAULT FOR TYPE CITEXT USING btree AS
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OPERATOR 1 < (citext, citext),
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OPERATOR 2 <= (citext, citext),
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OPERATOR 3 = (citext, citext),
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OPERATOR 4 >= (citext, citext),
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OPERATOR 5 > (citext, citext),
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FUNCTION 1 citext_cmp(citext, citext);
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--
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-- The hash indexing operator class.
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--
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CREATE OPERATOR CLASS citext_ops
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DEFAULT FOR TYPE citext USING hash AS
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OPERATOR 1 = (citext, citext),
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FUNCTION 1 citext_hash(citext);
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--
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-- Aggregates.
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--
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CREATE OR REPLACE FUNCTION citext_smaller(citext, citext)
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RETURNS citext
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION citext_larger(citext, citext)
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RETURNS citext
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' IMMUTABLE STRICT;
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CREATE AGGREGATE min(citext) (
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SFUNC = citext_smaller,
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STYPE = citext,
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SORTOP = <
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);
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CREATE AGGREGATE max(citext) (
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SFUNC = citext_larger,
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STYPE = citext,
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SORTOP = >
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);
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--
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-- CITEXT pattern matching.
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--
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CREATE OR REPLACE FUNCTION texticlike(citext, citext)
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RETURNS bool AS 'texticlike'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticnlike(citext, citext)
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RETURNS bool AS 'texticnlike'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticregexeq(citext, citext)
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RETURNS bool AS 'texticregexeq'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticregexne(citext, citext)
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RETURNS bool AS 'texticregexne'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OPERATOR ~ (
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PROCEDURE = texticregexeq,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = !~,
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RESTRICT = icregexeqsel,
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JOIN = icregexeqjoinsel
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);
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CREATE OPERATOR ~* (
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PROCEDURE = texticregexeq,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = !~*,
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RESTRICT = icregexeqsel,
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JOIN = icregexeqjoinsel
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);
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CREATE OPERATOR !~ (
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PROCEDURE = texticregexne,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = ~,
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RESTRICT = icregexnesel,
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JOIN = icregexnejoinsel
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);
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CREATE OPERATOR !~* (
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PROCEDURE = texticregexne,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = ~*,
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RESTRICT = icregexnesel,
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JOIN = icregexnejoinsel
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);
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CREATE OPERATOR ~~ (
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PROCEDURE = texticlike,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = !~~,
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RESTRICT = iclikesel,
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JOIN = iclikejoinsel
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);
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CREATE OPERATOR ~~* (
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PROCEDURE = texticlike,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = !~~*,
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RESTRICT = iclikesel,
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JOIN = iclikejoinsel
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);
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CREATE OPERATOR !~~ (
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PROCEDURE = texticnlike,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = ~~,
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RESTRICT = icnlikesel,
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JOIN = icnlikejoinsel
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);
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CREATE OPERATOR !~~* (
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PROCEDURE = texticnlike,
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LEFTARG = citext,
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RIGHTARG = citext,
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NEGATOR = ~~*,
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RESTRICT = icnlikesel,
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JOIN = icnlikejoinsel
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);
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--
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-- Matching citext to text.
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--
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CREATE OR REPLACE FUNCTION texticlike(citext, text)
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RETURNS bool AS 'texticlike'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticnlike(citext, text)
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RETURNS bool AS 'texticnlike'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticregexeq(citext, text)
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RETURNS bool AS 'texticregexeq'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OR REPLACE FUNCTION texticregexne(citext, text)
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RETURNS bool AS 'texticregexne'
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LANGUAGE 'internal' IMMUTABLE STRICT;
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CREATE OPERATOR ~ (
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PROCEDURE = texticregexeq,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = !~,
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RESTRICT = icregexeqsel,
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JOIN = icregexeqjoinsel
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);
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CREATE OPERATOR ~* (
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PROCEDURE = texticregexeq,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = !~*,
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RESTRICT = icregexeqsel,
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JOIN = icregexeqjoinsel
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);
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CREATE OPERATOR !~ (
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PROCEDURE = texticregexne,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = ~,
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RESTRICT = icregexnesel,
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JOIN = icregexnejoinsel
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);
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CREATE OPERATOR !~* (
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PROCEDURE = texticregexne,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = ~*,
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RESTRICT = icregexnesel,
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JOIN = icregexnejoinsel
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);
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CREATE OPERATOR ~~ (
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PROCEDURE = texticlike,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = !~~,
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RESTRICT = iclikesel,
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JOIN = iclikejoinsel
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);
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CREATE OPERATOR ~~* (
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PROCEDURE = texticlike,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = !~~*,
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RESTRICT = iclikesel,
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JOIN = iclikejoinsel
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);
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CREATE OPERATOR !~~ (
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PROCEDURE = texticnlike,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = ~~,
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RESTRICT = icnlikesel,
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JOIN = icnlikejoinsel
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);
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CREATE OPERATOR !~~* (
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PROCEDURE = texticnlike,
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LEFTARG = citext,
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RIGHTARG = text,
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NEGATOR = ~~*,
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RESTRICT = icnlikesel,
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JOIN = icnlikejoinsel
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);
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