คะแนนเฉลี่ยของผู้เล่นจากสโมสรชื่อ "AIB" คือเท่าใด
What is the average points of players from club with name "AIB".
df_player = pd.DataFrame(columns=['Points', 'Club_ID']); df_club = pd.DataFrame(columns=['Club_ID', 'name'])
df_player[df_player['Club_ID'].isin(df_club[df_club['name']=='AIB']['Club_ID'])]['Points'].mean()