CREATE TABLE table_name_78 (matches INT, average VARCHAR, rank VARCHAR)

What is the number of matches with an average larger than 6.33, with a rank of 1?
SELECT SUM(matches) FROM table_name_78 WHERE average > 6.33 AND rank = 1
SELECT SUM("matches") FROM "table_name_78" WHERE "average" > 6.33 AND "rank" = 1