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84 lines
2.7 KiB
SQL
84 lines
2.7 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 format_bytes;
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DELIMITER $$
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CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_bytes (
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-- We feed in and return TEXT here, as aggregates of
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-- bytes can return numbers larger than BIGINT UNSIGNED
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bytes TEXT
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)
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RETURNS TEXT
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COMMENT '
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Description
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-----------
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Takes a raw bytes value, and converts it to a human readable format.
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Parameters
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-----------
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bytes (TEXT):
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A raw bytes value.
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Returns
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-----------
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TEXT
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Example
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-----------
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mysql> SELECT sys.format_bytes(2348723492723746) AS size;
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+----------+
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| size |
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+----------+
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| 2.09 PiB |
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+----------+
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1 row in set (0.00 sec)
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mysql> SELECT sys.format_bytes(2348723492723) AS size;
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+----------+
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| size |
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+----------+
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| 2.14 TiB |
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+----------+
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1 row in set (0.00 sec)
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mysql> SELECT sys.format_bytes(23487234) AS size;
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+-----------+
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| size |
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+-----------+
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| 22.40 MiB |
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+-----------+
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1 row in set (0.00 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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IF bytes IS NULL THEN RETURN NULL;
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ELSEIF bytes >= 1125899906842624 THEN RETURN CONCAT(ROUND(bytes / 1125899906842624, 2), ' PiB');
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ELSEIF bytes >= 1099511627776 THEN RETURN CONCAT(ROUND(bytes / 1099511627776, 2), ' TiB');
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ELSEIF bytes >= 1073741824 THEN RETURN CONCAT(ROUND(bytes / 1073741824, 2), ' GiB');
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ELSEIF bytes >= 1048576 THEN RETURN CONCAT(ROUND(bytes / 1048576, 2), ' MiB');
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ELSEIF bytes >= 1024 THEN RETURN CONCAT(ROUND(bytes / 1024, 2), ' KiB');
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ELSE RETURN CONCAT(ROUND(bytes, 0), ' bytes');
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END IF;
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END$$
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DELIMITER ;
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