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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 extract_table_from_file_name;
DELIMITER $$
CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION extract_table_from_file_name (
path VARCHAR(512)
)
RETURNS VARCHAR(64)
COMMENT '
Description
-----------
Takes a raw file path, and extracts the table name from it.
Useful for when interacting with Performance Schema data
concerning IO statistics, for example.
Parameters
-----------
path (VARCHAR(512)):
The full file path to a data file to extract the table name from.
Returns
-----------
VARCHAR(64)
Example
-----------
mysql> SELECT sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\');
+---------------------------------------------------------------------------+
| sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\') |
+---------------------------------------------------------------------------+
| employee |
+---------------------------------------------------------------------------+
1 row in set (0.02 sec)
'
SQL SECURITY INVOKER
DETERMINISTIC
NO SQL
BEGIN
RETURN LEFT(SUBSTRING_INDEX(REPLACE(SUBSTRING_INDEX(REPLACE(path, '\\', '/'), '/', -1), '@0024', '$'), '.', 1), 64);
END$$
DELIMITER ;
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