What is the lowest total that has a rank less than 8, a silver greater than 6, and 20 as the bronze?
CREATE TABLE "women" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT MIN("total") FROM "women" WHERE "rank"<8 AND "silver">6 AND "bronze"=20;