What is the sum of the bronze medals when there were less than 8 total medals, 0 silver medals and a rank of 9?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("bronze") FROM "medal_table" WHERE "total"<8 AND "rank"=9 AND "silver"<0;