SELECT T1.country_code, T1.first_name FROM players AS T1 JOIN rankings AS T2 ON T1.player_id = T2.player_id ORDER BY T2.tours DESC LIMIT 1
Temukan nama depan dan kode negara pemain yang melakukan tur terbanyak.
CREATE TABLE players (country_code VARCHAR, first_name VARCHAR, player_id VARCHAR); CREATE TABLE rankings (player_id VARCHAR, tours VARCHAR)