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from_binary

Description​

Converts a binary value to a VARCHAR string based on the specified binary format (binary_type). The following binary formats are supported: hex, encode64, and utf8. If no binary_type is specified, hex is the default.

Syntax​

from_binary(binary[, binary_type])

Parameters​

  • binary: the input binary to convert, required.

  • binary_type: the binary format for conversion, optional.

    • hex (default): from_binary uses the hex method to encode the input binary to a VARCHAR string.
    • encode64: from_binary uses the base64 method to encode the input binary to a VARCHAR string.
    • utf8: from_binary converts the input binary to a VARCHAR string without any transformation.

Return value​

Returns a VARCHAR string.

Examples​

mysql> select from_binary(to_binary('ABAB', 'hex'), 'hex');
+----------------------------------------------+
| from_binary(to_binary('ABAB', 'hex'), 'hex') |
+----------------------------------------------+
| ABAB                                         |
+----------------------------------------------+
1 row in set (0.02 sec)

mysql> select from_base64(from_binary(to_binary('U1RBUlJPQ0tT', 'encode64'), 'encode64'));
+-----------------------------------------------------------------------------+
| from_base64(from_binary(to_binary('U1RBUlJPQ0tT', 'encode64'), 'encode64')) |
+-----------------------------------------------------------------------------+
| STARROCKS                                                                   |
+-----------------------------------------------------------------------------+
1 row in set (0.01 sec)

mysql> select from_binary(to_binary('STARROCKS', 'utf8'), 'utf8');
+-----------------------------------------------------+
| from_binary(to_binary('STARROCKS', 'utf8'), 'utf8') |
+-----------------------------------------------------+
| STARROCKS                                           |
+-----------------------------------------------------+
1 row in set (0.01 sec)

References​