✅✅ Beats 100% || PostgreSQL || Simple Solution
\n\n# Code\n\n-- Write your PostgreSQL query statement below\nselect\n    round(count(*)::numeric/(select count(distinct player_id) from Activity), 2) as fracti
\n\n# Code\n```\n-- Write your PostgreSQL query statement below\nselect\n    round(count(*)::numeric/(select count(distinct player_id) from Activity), 2) as fraction\nfrom\n    Activity\nwhere\n    (player_id, event_date)  in (\n        select\n            player_id,\n            min(event_date) + 1\n        from\n            Activity\n        group by player_id\n        \n    )\n```
['PostgreSQL']