What are the highest attempts that have net yards less than 631, and 2 for the touchdowns?
CREATE TABLE "rushing" (
  "player" text,
  "attempts" real,
  "net_yards" real,
  "yards_per_attempt" real,
  "touchdowns" real
);
SELECT MAX("attempts") FROM "rushing" WHERE "net_yards"<631 AND "touchdowns"=2;