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MySQL 5.7 Reference Manual
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26.4.5.3 The format_bytes() Function

Given a value in bytes, converts it to human-readable format and returns a string consisting of a value and a units indicator. Depending on the size of the value, the units part is bytes, KiB (kibibytes), MiB (mebibytes), GiB (gibibytes), TiB (tebibytes), or PiB (pebibytes).

Parameters
  • bytes TEXT: The bytes value to format.

Return Value

A TEXT value.

Example
mysql> SELECT format_bytes(512), format_bytes(18446644073709551615);
+-------------------+------------------------------------+
| format_bytes(512) | format_bytes(18446644073709551615) |
+-------------------+------------------------------------+
| 512 bytes         | 16383.91 PiB                       |
+-------------------+------------------------------------+

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