2020. Number of Accounts That Did Not Stream ¶ SQL 1 2 3 4 5 6 7SELECT COUNT(Subscriptions.account_id) AS accounts_count FROM Subscriptions LEFT JOIN Streams USING (account_id) WHERE 2021 BETWEEN YEAR(Subscriptions.start_date) AND YEAR(Subscriptions.end_date) AND YEAR(Streams.stream_date) != 2021;