CREATE TABLE table_name_38 (diff INTEGER, played INTEGER)
SELECT SUM(diff) FROM table_name_38 WHERE played < 6
อะไรคือความแตกต่างโดยรวมสำหรับทีมที่เล่นน้อยกว่า 6 เกม?
What is the total difference for teams that played less than 6 games?