What is the lowest goal for a goal against 37 and less than 15 victories?
CREATE TABLE "groupe_a" (
  "rank" real,
  "club" text,
  "points" real,
  "played" real,
  "victories" real,
  "draws" real,
  "defeats" real,
  "goals_for" real,
  "goals_against" real,
  "goal_average" real
);
SELECT MIN("goals_for") FROM "groupe_a" WHERE "goals_against"=37 AND "victories"<15;