name: calls
table: calls
grain:
- call_id
columns:
- name: call_id
  type: number
- name: call_date
  type: time
  role: time
- name: duration_minutes
  type: number
- name: opportunity_id
  type: number
- name: rep_id
  type: number
- name: sentiment
  type: time
  role: time
- name: transcript_url
  type: string
joins:
- to: opportunities
  'on': opportunity_id = opportunities.opportunity_id
  relationship: many_to_one
- to: sales_reps
  'on': rep_id = sales_reps.rep_id
  relationship: many_to_one