Cette leçon est en anglais pour le moment.
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.
Cette leçon est en anglais pour le moment.
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.