unhex.md

description
Converts the hexadecimal number into the bytes represented by a number.

UNHEX

Syntax

UNHEX(expression varchar) → varbinary

• expression: A string containing only hexadecimal digits.

Examples

{% code title="UNHEX example" %}

SELECT UNHEX('4472656D696F')
-- RHJlbWlv

{% endcode %}

Usage Notes

The returned value is a binary string. If the expression contains non-hex characters, the result is NULL.