How many league cup goals on average for players with over 0 FA cup and 5 league goals?
CREATE TABLE "goalscorers" (
  "name" text,
  "league" real,
  "fa_cup" real,
  "league_cup" real,
  "europe" real,
  "total" real
);
SELECT AVG("league_cup") FROM "goalscorers" WHERE "fa_cup">0 AND "league"=5;