name: active_users
display_name: Monthly Active Users
category: product_usage
type: count
unit: users
grain: monthly
table: user_events
expression: "COUNT(DISTINCT user_id)"
time_column: event_date
description: "Monthly Active Users (MAU) — the count of unique users who performed at least one event in a given month."
dimensions:
  - feature
  - plan_type
synonyms:
  - mau
  - monthly_actives
  - active_users_monthly
notes:
  - "A user counts as active if they trigger any tracked event within the month"
  - "Distinguish from logins-only — prefer meaningful engagement events"
  - "Filter internal/test accounts before aggregating"
sql: |
  SELECT
      DATE_TRUNC('month', event_date) AS month,
      COUNT(DISTINCT user_id) AS active_users
  FROM user_events
  WHERE event_type != 'internal'
  GROUP BY 1
  ORDER BY 1