Which Points have Touchdowns larger than 0, and an Extra points smaller than 0?
CREATE TABLE "michigan_48_ohio_northern_0" (
  "player" text,
  "touchdowns" real,
  "extra_points" real,
  "field_goals" real,
  "points" real
);
SELECT SUM("points") FROM "michigan_48_ohio_northern_0" WHERE "touchdowns">0 AND "extra_points"<0;