이 레슨은 당분간 영어로 제공돼요.
Per player, per post, per country
A leaderboard needs a total for each player, not one total for everyone. GROUP BY splits the rows into groups and runs your aggregate once per group.
이 레슨은 당분간 영어로 제공돼요.
A leaderboard needs a total for each player, not one total for everyone. GROUP BY splits the rows into groups and runs your aggregate once per group.