CREATE TABLE table_272865_20 (matches_as_captain VARCHAR, asian_cup_played_as_a_captain VARCHAR)

How many matches as captain were played where Asian Cup played as a captain is Qatar 1988
SELECT matches_as_captain FROM table_272865_20 WHERE asian_cup_played_as_a_captain = "Qatar 1988"
SELECT "matches_as_captain" FROM "table_272865_20" WHERE "Qatar 1988" = "asian_cup_played_as_a_captain"