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63 lines
2.3 KiB
SQL
63 lines
2.3 KiB
SQL
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; version 2 of the License.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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DROP FUNCTION IF EXISTS extract_table_from_file_name;
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DELIMITER $$
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CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION extract_table_from_file_name (
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path VARCHAR(512)
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)
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RETURNS VARCHAR(64)
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COMMENT '
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Description
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-----------
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Takes a raw file path, and extracts the table name from it.
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Useful for when interacting with Performance Schema data
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concerning IO statistics, for example.
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Parameters
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-----------
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path (VARCHAR(512)):
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The full file path to a data file to extract the table name from.
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Returns
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-----------
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VARCHAR(64)
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Example
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-----------
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mysql> SELECT sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\');
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+---------------------------------------------------------------------------+
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| sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\') |
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+---------------------------------------------------------------------------+
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| employee |
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+---------------------------------------------------------------------------+
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1 row in set (0.02 sec)
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'
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SQL SECURITY INVOKER
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DETERMINISTIC
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NO SQL
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BEGIN
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RETURN LEFT(SUBSTRING_INDEX(REPLACE(SUBSTRING_INDEX(REPLACE(path, '\\', '/'), '/', -1), '@0024', '$'), '.', 1), 64);
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END$$
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DELIMITER ;
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