What class has over 0 wins and 42 points?
CREATE TABLE "grand_prix_motorcycle_racing_results" (
  "year" real,
  "class" text,
  "team" text,
  "points" real,
  "rank" text,
  "wins" real
);
SELECT "class" FROM "grand_prix_motorcycle_racing_results" WHERE "wins">0 AND "points"=42;