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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 format_bytes;
DELIMITER $$
CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_bytes (
-- We feed in and return TEXT here, as aggregates of
-- bytes can return numbers larger than BIGINT UNSIGNED
bytes TEXT
)
RETURNS TEXT
COMMENT '
Description
-----------
Takes a raw bytes value, and converts it to a human readable format.
Parameters
-----------
bytes (TEXT):
A raw bytes value.
Returns
-----------
TEXT
Example
-----------
mysql> SELECT sys.format_bytes(2348723492723746) AS size;
+----------+
| size |
+----------+
| 2.09 PiB |
+----------+
1 row in set (0.00 sec)
mysql> SELECT sys.format_bytes(2348723492723) AS size;
+----------+
| size |
+----------+
| 2.14 TiB |
+----------+
1 row in set (0.00 sec)
mysql> SELECT sys.format_bytes(23487234) AS size;
+-----------+
| size |
+-----------+
| 22.40 MiB |
+-----------+
1 row in set (0.00 sec)
'
SQL SECURITY INVOKER
DETERMINISTIC
NO SQL
BEGIN
IF bytes IS NULL THEN RETURN NULL;
ELSEIF bytes >= 1125899906842624 THEN RETURN CONCAT(ROUND(bytes / 1125899906842624, 2), ' PiB');
ELSEIF bytes >= 1099511627776 THEN RETURN CONCAT(ROUND(bytes / 1099511627776, 2), ' TiB');
ELSEIF bytes >= 1073741824 THEN RETURN CONCAT(ROUND(bytes / 1073741824, 2), ' GiB');
ELSEIF bytes >= 1048576 THEN RETURN CONCAT(ROUND(bytes / 1048576, 2), ' MiB');
ELSEIF bytes >= 1024 THEN RETURN CONCAT(ROUND(bytes / 1024, 2), ' KiB');
ELSE RETURN CONCAT(ROUND(bytes, 0), ' bytes');
END IF;
END$$
DELIMITER ;
|
