CREATE TABLE "record_by_conference" (
  "conference" text,
  "num_of_bids" real,
  "record" text,
  "win_pct" real,
  "round_of_32" real,
  "sweet_sixteen" real,
  "elite_eight" real,
  "final_four" real,
  "championship_game" real
);

Question: What is the lowest number of bids in the Missouri Valley conference?
SQL: SELECT MIN("num_of_bids") FROM "record_by_conference" WHERE "conference"='missouri valley';