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MySQL | FROM_BASE64 method
schedule Aug 12, 2023
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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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