CREATE TABLE table_name_47 (goals__2008_ INT, games__2008_ VARCHAR, debut_round VARCHAR)

What is the average number of goals with 21 games for a debut round less than 1?
SELECT AVG(goals__2008_) FROM table_name_47 WHERE games__2008_ = 21 AND debut_round < 1
SELECT AVG("goals__2008_") FROM "table_name_47" WHERE "debut_round" < 1 AND "games__2008_" = 21