What is the high goal against associated with 18 wins, a Goal Difference of 43, and under 6 draws?
CREATE TABLE "league_standings" (
  "position" real,
  "club" text,
  "played" real,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "points" real,
  "goal_difference" real
);
SELECT MAX("goals_against") FROM "league_standings" WHERE "wins"=18 AND "goal_difference"=43 AND "draws"<6;