mirror of
https://github.com/postgres/postgres.git
synced 2025-11-03 09:13:20 +03:00
380bd04c16
getting rid of numerous ad-hoc versions that have popped up in various places. Shortens code and avoids conflict with Windows min() and max() macros.
55 lines
1.1 KiB
MySQL
55 lines
1.1 KiB
MySQL
-- misc_utils.sql --
|
|
--
|
|
-- SQL code to define misc functions.
|
|
--
|
|
-- Copyright (c) 1998, Massimo Dal Zotto <dz@cs.unitn.it>
|
|
--
|
|
-- This file is distributed under the GNU General Public License
|
|
-- either version 2, or (at your option) any later version.
|
|
|
|
-- Return the pid of the backend.
|
|
--
|
|
|
|
-- Adjust this setting to control where the objects get created.
|
|
SET search_path = public;
|
|
|
|
CREATE OR REPLACE FUNCTION backend_pid()
|
|
RETURNS int4
|
|
AS 'MODULE_PATHNAME'
|
|
LANGUAGE 'C';
|
|
|
|
-- Unlisten from a relation.
|
|
--
|
|
CREATE OR REPLACE FUNCTION "unlisten"(name)
|
|
RETURNS int4
|
|
AS 'MODULE_PATHNAME'
|
|
LANGUAGE 'C';
|
|
|
|
-- Unlisten from all relations for this backend.
|
|
--
|
|
CREATE OR REPLACE FUNCTION "unlisten"()
|
|
RETURNS int4
|
|
AS 'SELECT "unlisten"(''*'')'
|
|
LANGUAGE 'SQL';
|
|
|
|
-- min(x,y)
|
|
--
|
|
CREATE OR REPLACE FUNCTION min(int4,int4)
|
|
RETURNS int4
|
|
AS 'MODULE_PATHNAME', 'int4min'
|
|
LANGUAGE 'C';
|
|
|
|
-- max(x,y)
|
|
--
|
|
CREATE OR REPLACE FUNCTION max(int4,int4)
|
|
RETURNS int4
|
|
AS 'MODULE_PATHNAME', 'int4max'
|
|
LANGUAGE 'C';
|
|
|
|
-- Return the number of active listeners on a relation
|
|
--
|
|
CREATE OR REPLACE FUNCTION active_listeners(text)
|
|
RETURNS int4
|
|
AS 'MODULE_PATHNAME'
|
|
LANGUAGE 'C';
|