CREATE TABLE table_name_4 (year VARCHAR, points VARCHAR, wins VARCHAR, class VARCHAR)

Tell me the total number of years for wins less than 2 and class of 50cc with points of 15
SELECT COUNT(year) FROM table_name_4 WHERE wins < 2 AND class = "50cc" AND points = 15
SELECT COUNT("year") FROM "table_name_4" WHERE "50cc" = "class" AND "points" = 15 AND "wins" < 2