Add a way to execute a statement without preparing it, and get results in binary format. For that, extend the client/server protocol with COM_STMT_EXECUTE_IMMEDIATE command, and add a C API call mysql_stmt_execute_immediate(). The new protocol command is similar to COM_QUERY, except the results are sent back in the binary format. The results can be bound to client buffers and retrieved in the same way as results of mysql_stmt_execute(). COM_STMT_EXECUTE_IMMEDIATE does not support multi-statements.