from_base64
Description
Decodes a Base64-encoded string. This function is an inverse of to_base64.
Syntax
from_base64(str);
Parameters
str
: the string to decode. It must be of the VARCHAR type.
Return value
Returns a value of the VARCHAR type. If the input is NULL or an invalid Base64 string, NULL is returned. If the input is empty, an error is returned.
This function accepts only one string. More than one input string causes an error.
Examples
mysql> select from_base64("starrocks");
+--------------------------+
| from_base64('starrocks') |
+--------------------------+
| ²֫®$ |
+--------------------------+
1 row in set (0.00 sec)
mysql> select from_base64('c3RhcnJvY2tz');
+-----------------------------+
| from_base64('c3RhcnJvY2tz') |
+-----------------------------+
| starrocks |
+-----------------------------+