postgresql/contrib/ltree/ltree--1.2--1.3.sql
Tom Lane 485f0aa859 Add hash support functions and hash opclass for contrib/ltree.
This also enables hash join and hash aggregation on ltree columns.

Tommy Pavlicek, reviewed by jian he

Discussion: https://postgr.es/m/CAEhP-W9ZEoHeaP_nKnPCVd_o1c3BAUvq1gWHrq8EbkNRiS9CvQ@mail.gmail.com
2024-03-21 18:27:49 -04:00

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652 B
SQL

/* contrib/ltree/ltree--1.2--1.3.sql */
-- complain if script is sourced in psql, rather than via ALTER EXTENSION
\echo Use "ALTER EXTENSION ltree UPDATE TO '1.3'" to load this file. \quit
CREATE FUNCTION hash_ltree(ltree)
RETURNS integer
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
CREATE FUNCTION hash_ltree_extended(ltree, bigint)
RETURNS bigint
AS 'MODULE_PATHNAME'
LANGUAGE C STRICT IMMUTABLE PARALLEL SAFE;
CREATE OPERATOR CLASS hash_ltree_ops
DEFAULT FOR TYPE ltree USING hash
AS
OPERATOR 1 = ,
FUNCTION 1 hash_ltree(ltree),
FUNCTION 2 hash_ltree_extended(ltree, bigint);
ALTER OPERATOR =(ltree, ltree) SET (HASHES);