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-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- 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; version 2 of the License.
--
-- 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP FUNCTION IF EXISTS version_patch;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION version_patch ()
    RETURNS TINYINT UNSIGNED
    COMMENT '
             Description
             -----------

             Returns the patch release version of MySQL Server.

             Returns
             -----------

             TINYINT UNSIGNED

             Example
             -----------

             mysql> SELECT VERSION(), sys.version_patch();
             +--------------------------------------+---------------------+
             | VERSION()                            | sys.version_patch() |
             +--------------------------------------+---------------------+
             | 5.7.9-enterprise-commercial-advanced | 9                   |
             +--------------------------------------+---------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    NO SQL
BEGIN
    RETURN SUBSTRING_INDEX(SUBSTRING_INDEX(VERSION(), '-', 1), '.', -1);
END$$

DELIMITER ;