name: ad_creatives
table: ad_creatives
grain:
- creative_id
columns:
- name: creative_id
  type: number
- name: ad_campaign_id
  type: number
- name: created_at
  type: time
  role: time
- name: format
  type: string
- name: name
  type: string
joins:
- to: ad_campaigns
  'on': ad_campaign_id = ad_campaigns.ad_campaign_id
  relationship: many_to_one