removed CREATE_SQL attribute cast `bytes_added` dict key to string for consistency
removed CREATE_SQL attribute
cast `bytes_added` dict key to string for consistency

wikimedia/analytics-user-metrics,rfaulkner/wikipedia_user_metrics,wikimedia/analytics-user-metrics,wikimedia/user_metrics,rfaulkner/wikipedia_user_metrics,wikimedia/user_metrics,wikimedia/analytics-user-metrics,rfaulkner/wikipedia_user_metrics,wikimedia/user_metrics