unhex
unhex
description
Syntax
VARCHAR unhex(VARCHAR str)
Enter a string, if the length of the string is 0 or an odd number, an empty string is returned;
If the string contains characters other than [0-9], [a-f], [A-F], an empty string is returned;
In other cases, every two characters are a group of characters converted into hexadecimal, and then spliced into a string for output.
example
mysql> select unhex('@');
+------------+
| unhex('@') |
+------------+
| |
+------------+
mysql> select unhex('41');
+-------------+
| unhex('41') |
+-------------+
| A |
+-------------+
mysql> select unhex('4142');
+---------------+
| unhex('4142') |
+---------------+
| AB |
+---------------+
keywords
UNHEX
