postgresql/contrib/pg_trgm/pg_trgm--1.0--1.1.sql

/* contrib/pg_trgm/pg_trgm--1.0--1.1.sql */

-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "ALTER EXTENSION pg_trgm UPDATE TO '1.1'" to load this file. \quit

ALTER OPERATOR FAMILY gin_trgm_ops USING gin ADD
        OPERATOR        5       pg_catalog.~ (text, text),
        OPERATOR        6       pg_catalog.~* (text, text);
Support indexing of regular-expression searches in contrib/pg_trgm. This works by extracting trigrams from the given regular expression, in generally the same spirit as the previously-existing support for LIKE searches, though of course the details are far more complicated. Currently, only GIN indexes are supported. We might be able to make it work with GiST indexes later. The implementation includes adding API functions to backend/regex/ to provide a view of the search NFA created from a regular expression. These functions are meant to be generic enough to be supportable in a standalone version of the regex library, should that ever happen. Alexander Korotkov, reviewed by Heikki Linnakangas and Tom Lane 2013-04-09 07:05:55 +02:00			`/* contrib/pg_trgm/pg_trgm--1.0--1.1.sql */`

			`-- complain if script is sourced in psql, rather than via CREATE EXTENSION`
			`\echo Use "ALTER EXTENSION pg_trgm UPDATE TO '1.1'" to load this file. \quit`

			`ALTER OPERATOR FAMILY gin_trgm_ops USING gin ADD`
			`OPERATOR 5 pg_catalog.~ (text, text),`
			`OPERATOR 6 pg_catalog.~* (text, text);`