Level 4 - Mid-LevelQuery-Based Questions
Month-1 Cohort Retention
Return cohort_month, cohort_size, and month1_retained_users (active next month).
Schema Context
users(id, signup_date), user_activity(user_id, activity_date)
Return cohort_month, cohort_size, and month1_retained_users (active next month).
users(id, signup_date), user_activity(user_id, activity_date)