CREATE TABLE table_name_38 (year_of_first_appearance VARCHAR(255), corps_name VARCHAR(255), number_of_finals_appearances VARCHAR(255))
What is the year of the first appearance of the Black Knights, who had less than 1 finals appearances?
    
SQL: SELECT COUNT(year_of_first_appearance) FROM table_name_38 WHERE corps_name = "black knights" AND number_of_finals_appearances < 1