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

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

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

CREATE FUNCTION gen_random_uuid()
RETURNS uuid
AS 'MODULE_PATHNAME', 'pg_random_uuid'
LANGUAGE C VOLATILE;
Add gen_random_uuid() to contrib/pgcrypto. This function provides a way of generating version 4 (pseudorandom) UUIDs based on pgcrypto's PRNG. The main reason for doing this is that the OSSP UUID library depended on by contrib/uuid-ossp is becoming more and more of a porting headache, so we need an alternative for people who can't install that. A nice side benefit though is that this implementation is noticeably faster than uuid-ossp's uuid_generate_v4() function. Oskari Saarenmaa, reviewed by Emre Hasegeli 2014-01-18 05:52:06 +08:00			`/* contrib/pgcrypto/pgcrypto--1.0--1.1.sql */`

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

			`CREATE FUNCTION gen_random_uuid()`
			`RETURNS uuid`
			`AS 'MODULE_PATHNAME', 'pg_random_uuid'`
			`LANGUAGE C VOLATILE;`