+----------+
             | 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)
            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