SELECT toYear(Date) as Year, toMonth(Date) as Month, Events
FROM (
  SELECT period as Date,
      countMerge(events) as Events
  FROM monthly_usage_v1
  WHERE app_id = '{{app_id}}'
  GROUP BY period
  ORDER BY period WITH FILL TO toStartOfMonth(now() + INTERVAL 1 MONTH) STEP toIntervalMonth(1)
) ORDER BY Year DESC, Month DESC