What are the highest points that have a difference of 8, with a position less than 4?
CREATE TABLE "campeonato_paulista" (
  "position" real,
  "team" text,
  "points" real,
  "played" real,
  "drawn" real,
  "lost" real,
  "against" real,
  "difference" text
);
SELECT MAX("points") FROM "campeonato_paulista" WHERE "difference"='8' AND "position"<4;