diff --git a/pgsql/mysql-function.sql b/pgsql/mysql-function.sql
new file mode 100644
index 00000000000..35679e004d9
--- /dev/null
+++ b/pgsql/mysql-function.sql
@@ -0,0 +1,39 @@
+-- ============================================================================
+-- Copyright (C) 2004 Benoit Mortier <benoit.mortier@opensides.be>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program; if not, write to the Free Software
+-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+--
+-- $Id$
+-- $Source$
+--
+-- ============================================================================
+
+CREATE OR REPLACE FUNCTION UNIX_TIMESTAMP(TIMESTAMP WITHOUT TIME ZONE)
+RETURNS BIGINT
+LANGUAGE SQL
+IMMUTABLE STRICT
+AS 'SELECT EXTRACT(EPOCH FROM $1)::bigint;';
+
+CREATE OR REPLACE FUNCTION UNIX_TIMESTAMP(TIMESTAMP WITH TIME ZONE)
+RETURNS BIGINT
+LANGUAGE SQL
+IMMUTABLE STRICT
+AS 'SELECT EXTRACT(EPOCH FROM $1)::bigint;';
+ 
+CREATE OR REPLACE FUNCTION FROM_UNIXTIME(BIGINT, VARCHAR)
+RETURNS TIMESTAMP WITH TIME ZONE
+LANGUAGE SQL
+IMMUTABLE STRICT
+AS 'SELECT TIMESTAMP WITH TIME ZONE \'epoch\' + $1 * interval \'1 second\';';
\ No newline at end of file