Algorithm · Intuit · Medium
You work for a subscription business and have a single user-level table, company_users, with one row per customer: id (INT, primary key) — the customer identifier signup_date (DATE) — the UTC day on which the account was created subscription_date (DATE, nullable) — the UTC day that the customer's first subscription began; NULL when no subscription was ever started termination_date (DATE, nullable) — the UTC day that subscription ended; NULL while it is still running…
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