mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-27 08:39:28 +08:00
754148d81f
with minor editorization by me. Hstore improvements * add operation hstore ? text - excat equivalent of exist() * remove undocumented behaviour of contains operation with NULL value * now 'key'::text=>NULL returns '"key"=>NULL' instead of NULL * Add GIN support for contains and exist operations * Add GiST support for exist operatiion * improve regression tests
265 lines
5.9 KiB
MySQL
265 lines
5.9 KiB
MySQL
SET search_path = public;
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BEGIN;
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CREATE FUNCTION hstore_in(cstring)
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RETURNS hstore
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict);
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CREATE FUNCTION hstore_out(hstore)
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RETURNS cstring
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict);
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CREATE TYPE hstore (
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INTERNALLENGTH = -1,
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INPUT = hstore_in,
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OUTPUT = hstore_out,
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STORAGE = extended
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);
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CREATE FUNCTION fetchval(hstore,text)
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RETURNS text
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE OPERATOR -> (
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LEFTARG = hstore,
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RIGHTARG = text,
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PROCEDURE = fetchval
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);
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CREATE FUNCTION isexists(hstore,text)
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RETURNS bool
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AS 'MODULE_PATHNAME','exists'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION exist(hstore,text)
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RETURNS bool
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AS 'MODULE_PATHNAME','exists'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE OPERATOR ? (
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LEFTARG = hstore,
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RIGHTARG = text,
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PROCEDURE = exist,
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RESTRICT = contsel,
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JOIN = contjoinsel
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);
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CREATE FUNCTION isdefined(hstore,text)
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RETURNS bool
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AS 'MODULE_PATHNAME','defined'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION defined(hstore,text)
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RETURNS bool
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AS 'MODULE_PATHNAME','defined'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION delete(hstore,text)
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RETURNS hstore
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AS 'MODULE_PATHNAME','delete'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION hs_concat(hstore,hstore)
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RETURNS hstore
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE OPERATOR || (
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LEFTARG = hstore,
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RIGHTARG = hstore,
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PROCEDURE = hs_concat
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);
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CREATE FUNCTION hs_contains(hstore,hstore)
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION hs_contained(hstore,hstore)
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE OPERATOR @> (
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LEFTARG = hstore,
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RIGHTARG = hstore,
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PROCEDURE = hs_contains,
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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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CREATE OPERATOR <@ (
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LEFTARG = hstore,
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RIGHTARG = hstore,
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PROCEDURE = hs_contained,
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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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-- obsolete:
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CREATE OPERATOR @ (
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LEFTARG = hstore,
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RIGHTARG = hstore,
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PROCEDURE = hs_contains,
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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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CREATE OPERATOR ~ (
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LEFTARG = hstore,
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RIGHTARG = hstore,
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PROCEDURE = hs_contained,
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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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CREATE FUNCTION tconvert(text,text)
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RETURNS hstore
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (iscachable);
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CREATE OPERATOR => (
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LEFTARG = text,
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RIGHTARG = text,
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PROCEDURE = tconvert
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);
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CREATE FUNCTION akeys(hstore)
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RETURNS _text
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION avals(hstore)
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RETURNS _text
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION skeys(hstore)
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RETURNS setof text
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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CREATE FUNCTION svals(hstore)
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RETURNS setof text
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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create type hs_each as (key text, value text);
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CREATE FUNCTION each(hstore)
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RETURNS setof hs_each
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict,iscachable);
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-- define the GiST support methods
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CREATE FUNCTION ghstore_in(cstring)
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RETURNS ghstore
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict);
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CREATE FUNCTION ghstore_out(ghstore)
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RETURNS cstring
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' with (isstrict);
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CREATE TYPE ghstore (
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INTERNALLENGTH = -1,
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INPUT = ghstore_in,
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OUTPUT = ghstore_out
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);
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CREATE FUNCTION ghstore_compress(internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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CREATE FUNCTION ghstore_decompress(internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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CREATE FUNCTION ghstore_penalty(internal,internal,internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C' WITH (isstrict);
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CREATE FUNCTION ghstore_picksplit(internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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CREATE FUNCTION ghstore_union(internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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CREATE FUNCTION ghstore_same(internal, internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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CREATE FUNCTION ghstore_consistent(internal,internal,int4)
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RETURNS bool
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AS 'MODULE_PATHNAME'
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LANGUAGE 'C';
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-- register the opclass for indexing (not as default)
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CREATE OPERATOR CLASS gist_hstore_ops
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DEFAULT FOR TYPE hstore USING gist
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AS
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OPERATOR 7 @> RECHECK,
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OPERATOR 9 ?(hstore,text) RECHECK,
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--OPERATOR 8 <@ RECHECK,
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OPERATOR 13 @ RECHECK,
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--OPERATOR 14 ~ RECHECK,
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FUNCTION 1 ghstore_consistent (internal, internal, int4),
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FUNCTION 2 ghstore_union (internal, internal),
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FUNCTION 3 ghstore_compress (internal),
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FUNCTION 4 ghstore_decompress (internal),
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FUNCTION 5 ghstore_penalty (internal, internal, internal),
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FUNCTION 6 ghstore_picksplit (internal, internal),
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FUNCTION 7 ghstore_same (internal, internal, internal),
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STORAGE ghstore;
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-- define the GIN support methods
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CREATE FUNCTION gin_extract_hstore(internal, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C;
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CREATE FUNCTION gin_extract_hstore_query(internal, internal, int2)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C;
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CREATE FUNCTION gin_consistent_hstore(internal, int2, internal)
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RETURNS internal
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AS 'MODULE_PATHNAME'
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LANGUAGE C;
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CREATE OPERATOR CLASS gin_hstore_ops
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DEFAULT FOR TYPE hstore USING gin
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AS
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OPERATOR 7 @> RECHECK,
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OPERATOR 9 ?(hstore,text),
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FUNCTION 1 bttextcmp(text,text),
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FUNCTION 2 gin_extract_hstore(internal, internal),
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FUNCTION 3 gin_extract_hstore_query(internal, internal, int2),
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FUNCTION 4 gin_consistent_hstore(internal, int2, internal),
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STORAGE text;
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END;
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