CREATE TABLE competition_result (competition_id NUMBER, club_id_1 NUMBER, club_id_2 NUMBER, score CLOB)
CREATE TABLE club (club_id NUMBER, name CLOB, region CLOB, start_year CLOB)
CREATE TABLE competition (competition_id NUMBER, year NUMBER, competition_type CLOB, country CLOB)
CREATE TABLE player (player_id NUMBER, name CLOB, position CLOB, club_id NUMBER, apps NUMBER, tries NUMBER, goals CLOB, points NUMBER)
CREATE TABLE club_rank (rank NUMBER, club_id NUMBER, gold NUMBER, silver NUMBER, bronze NUMBER, total NUMBER)

What are the names of all clubs that do not have any players?
SELECT name FROM club WHERE NOT club_id IN (SELECT club_id FROM player)
SELECT "name" FROM "club" WHERE NOT "club_id" IN (SELECT "club_id" FROM "player")