1142. User Activity for the Past 30 Days II ¶ SQL 1 2 3 4 5 6 7 8 9 10SELECT IFNULL( ROUND( COUNT(DISTINCT session_id) / COUNT(DISTINCT user_id), 2 ), 0.00 ) AS average_sessions_per_user FROM Activity WHERE activity_date BETWEEN '2019-06-28' AND '2019-07-27';