What is the maximum cap number where 0 goals were scored with a rank of 15?
CREATE TABLE "most_caps_for_estonia" (
  "rank" real,
  "player" text,
  "career" text,
  "caps" real,
  "goals" real
);
SELECT MAX("caps") FROM "most_caps_for_estonia" WHERE "goals"=0 AND "rank"=15;