SCHEMA:
CREATE TABLE table_name_18 (appearances VARCHAR, position_ VARCHAR, f_ VARCHAR, date_to_ VARCHAR, h_ VARCHAR)
USER:
What is Appearances, when Postion [F ] is "Defender", and when Date to [H ] is "1938"?

QUERY:
SELECT appearances FROM table_name_18 WHERE position_[f_] = "defender" AND date_to_[h_] = "1938"