By the way, the following script fails with the same Exception (mysql_stmt_send_long_data):

| db str sttmt |

������ db := GADriver
������ ������ ������ ������ connectToConnectionString:
'mysql://localhost:3306/leaincertezas?user=learoot&password=welcomeLEA'.

������ str := 'INSERT INTO chaves_de_encriptacao (numero_funcional, chave_privada, chave_publica) VALUES (''?'', ''?'', ''?'')'.

������ sttmt := db prepare: str.
������ sttmt at: 1 bind: '10'.
������ sttmt at: 2 bind: '0BC0DE0FG32A128AB2EF01'.
������ sttmt at: 3 bind: 'BEC0D01279F92123FAB2E0'.

������ sttmt execute.

������ db close.

But the script:

| db str sttmt |

������ db := GADriver
������ ������ ������ ������ connectToConnectionString:
'mysql://localhost:3306/leaincertezas?user=learoot&password=welcomeLEA'.

������ str := 'INSERT INTO chaves_de_encriptacao (numero_funcional, chave_privada, chave_publica) VALUES (''10'', ''0BC0DE0FG32A128AB2EF01'', ''0BC0DE0FG32A128AB2EF01'')'.

������ db execute: str.

������ db close.

Results:

MariaDB [leaincertezas]> SELECT * FROM chaves_de_encriptacao;
+------------------+------------------------+------------------------+
| numero_funcional | chave_privada������������������ | chave_publica������������������ |
+------------------+------------------------+------------------------+
|���������������������������� 10 | 0BC0DE0FG32A128AB2EF01 | 0BC0DE0FG32A128AB2EF01 |
+------------------+------------------------+------------------------+
1 row in set (0.00 sec)