adh002.sql

-- Write queries as a union of all 3 tables.

WITH
  CombinedEvents AS (
    SELECT
      viewability_metrics,
      campaign_id
    FROM adh.google_ads_impressions
    UNION ALL
    SELECT
      viewability_metrics,
      impression_data.campaign_id
    FROM adh.google_ads_active_views
    UNION ALL
    SELECT
      viewability_metrics,
      impression_data.campaign_id
    FROM adh.google_ads_creative_conversions
  ),
  Metrics AS (
    SELECT
      campaign_id,
      SUM(viewability_metrics.mrc_viewable_impressions.measurable_count)
        AS mrc_measurable_impressions,
      SUM(viewability_metrics.mrc_viewable_impressions.viewable_count)
        AS mrc_viewable_impressions,
      SUM(viewability_metrics.groupm_viewable_impressions.measurable_count)
        AS groupm_measurable_impressions,
      SUM(viewability_metrics.groupm_viewable_impressions.viewable_count)
        AS groupm_viewable_impressions
    FROM
      CombinedEvents
    GROUP BY
      campaign_id
  )
SELECT
  campaign_id,
  SAFE_DIVIDE(mrc_viewable_impressions, mrc_measurable_impressions)
    AS mrc_viewability_rate,
  SAFE_DIVIDE(groupm_viewable_impressions, groupm_measurable_impressions)
    AS groupm_viewability_rate
FROM
  Metrics