prepared statements don't work! (5 replies)

Hey guys,
I am pretty new to c++, and I am currently writing a program, which should use prepared statements to insert a specific value into the database.

int main(void)
{
cout << endl;
cout << "Testblablablablalbal" << endl;
try {
sql::Driver *driver;
sql::Connection	*con;
sql::PreparedStatement	*prep_stmt;

driver = get_driver_instance();
con = driver->connect("tcp://127.0.0.1:3306", "test", "user");
// Connect to the MySQL test database
con->setSchema("test");

prep_stmt = con->prepareStatement("INSERT INTO test(id, label) VALUES (?, ?)");

prep_stmt->setInt(1, 1);
prep_stmt->setString(2, "a");
prep_stmt->execute();

prep_stmt->setInt(1, 2);
prep_stmt->setString(2, "b");
prep_stmt->execute();


delete prep_stmt;
delete con;
} catch (sql::SQLException &e) {
cout << "# ERR: SQLException in " << __FILE__;
cout << "(" << __FUNCTION__ << ") on line " << __LINE__ << endl;
cout << "# ERR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << " )" << endl;
}
cout << endl;
system("PAUSE");
return EXIT_SUCCESS;
}

So, if I run this programm, I just get a "0, 0" in my database, and not ANY of these:

prep_stmt->setInt(1, 1);
prep_stmt->setString(2, "a");

prep_stmt->setInt(1, 2);
prep_stmt->setString(2, "b");


Why it doesn't work?
I just don't get it...


Thank you very much,
Paul