Subscription Commerce Analytics Path · Mission 15 of 25Hard

Plan migrations Q1 2026

First multi-JOIN with two aliases of the same dim table. Practice joining dim_plans twice (once for from_plan_id, once for to_plan_id), aggregating to (from_family, to_family) grain, and producing a migration matrix the pricing team can use to spot upgrade vs downgrade flows.

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The Brief

You'll practice

Filter event_typefrom/to plan diffGROUP BY
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Mission 14
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All 25 missions in Subscription Commerce Analytics Path ↓
  1. 1. Snapshot inventory by plan
  2. 2. Active subscribers by country
  3. 3. MRR by plan family
  4. 4. Q3 2024 acquisition by channel
  5. 5. Q1 2026 cancelled subscriptions
  6. 6. Monthly active subscriber trend
  7. 7. 90-day cohort retention
  8. 8. Blended revenue: subs MRR plus one-time orders
  9. 9. ARPU by plan
  10. 10. Skip rate by plan family
  11. 11. First event per subscription
  12. 12. Event-derived current state
  13. 13. Find late-arriving events
  14. 14. Subscriptions with multiple skips
  15. 15. Plan migrations Q1 2026
  16. 16. MRR walk components — Q1 2026
  17. 17. Subscriber-vs-one-time blended LTV (matched cohort)
  18. 18. NRR by signup cohort
  19. 19. Churn forensics by reason_code (Q1 2026)
  20. 20. Pause-shaped cancellations cleanup
  21. 21. 12-month cohort decay curve
  22. 22. Resurrection identification
  23. 23. Snapshot-vs-event drift report
  24. 24. Subscriber LTV with one-time spillover
  25. 25. THE MRR WALK — opening + new + expansion − contraction − churn + resurrection = closing