What is the least amount of failures with 1 launch and 0 partial failures?
CREATE TABLE "by_type" (
  "rocket" text,
  "country" text,
  "family" text,
  "launches" real,
  "successes" real,
  "failures" real,
  "partial_failures" real
);
SELECT MIN("failures") FROM "by_type" WHERE "launches"=1 AND "partial_failures"<0;