CREATE TABLE "world_championships_total_medals" (
  "rank" text,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);

Question: What is the bronze number when the total is 54/
SQL: SELECT AVG("bronze") FROM "world_championships_total_medals" WHERE "total"=54;

Question: What is the least bronze number when the silver is less than 0?
SQL: SELECT MIN("bronze") FROM "world_championships_total_medals" WHERE "silver"<0;

Question: What is the least silver when the total is more than 2, bronze is 3, gold is more than 0, and rank is 1?
SQL: SELECT MIN("silver") FROM "world_championships_total_medals" WHERE "total">2 AND "bronze"=3 AND "gold">0 AND "rank"='1';

Question: What is the number of silver when the total is more than 2, and bronze is less than 3, with  a rank of 7?
SQL: SELECT COUNT("silver") FROM "world_championships_total_medals" WHERE "total">2 AND "bronze"<3 AND "rank"='7';