What is the highest Points when the record was 12–2, and the Points Against are larger than 6?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "result" text,
  "record" text,
  "opponent" text,
  "points_for" real,
  "points_against" real,
  "first_downs" real,
  "attendance" real
);
SELECT MAX("points_for") FROM "schedule" WHERE "record"='12–2' AND "points_against">6;