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MySQL | FROM_BASE64 method
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schedule Jul 1, 2022
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MySQL's FROM_BASE64(~)
method decodes a base64 encoded string and returns the resulting binary string.
NOTE
base64 is a method to encode binary data using ASCII characters. As ASCII characters are available in most character sets, this means there is a low chance of data corruption. Each base64 digit represents 6 bits of data. Therefore, 3 bytes (24 bits) can be represented using 4 base64 digits.
There are a few rules followed by FROM_BASE64(~)
:
Encoding for alphabet value 62 is
'+'
Encoding for alphabet value 63 is
'/'
Newlines, carriage returns, tabs and spaces are ignored when decoding.
Parameters
1. str
| string
The base64 encoded string to be decoded to a binary string.
Examples
Basic usage
To decode the base64 string 'QXBwbGU='
:
SELECT FROM_BASE64('QXBwbGU=');
+---------------------------+| FROM_BASE64('QXBwbGU=') |+---------------------------+| Apple |+---------------------------+
NULL argument
If the input is NULL
, NULL
is returned:
SELECT FROM_BASE64(NULL);
+-------------------+| FROM_BASE64(NULL) |+-------------------+| NULL |+-------------------+
Published by Arthur Yanagisawa
Edited by 0 others
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Official MySQL Documentation
https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_from-base64
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