Who has a total of the Bronze less than 4, gold more than 0, and no silver?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("bronze") FROM "medal_table" WHERE "total"<4 AND "gold">0 AND "silver"=0;