CREATE TABLE "mixed_martial_arts_record" (
  "res" text,
  "record" text,
  "opponent" text,
  "method" text,
  "event" text,
  "round" text
);

Question: What event had a win, record of 8-1 and n/a round?
SQL: SELECT "event" FROM "mixed_martial_arts_record" WHERE "res"='win' AND "round"='n/a' AND "record"='8-1';

Question: What event was the opponent Karl Knothe and had a submission (rear naked choke)?
SQL: SELECT "event" FROM "mixed_martial_arts_record" WHERE "method"='submission (rear naked choke)' AND "opponent"='karl knothe';

Question: What's the record for the match when the res was a win and the method was a decision?
SQL: SELECT "record" FROM "mixed_martial_arts_record" WHERE "method"='decision' AND "res"='win';

Question: What round had a record of 4-1?
SQL: SELECT "round" FROM "mixed_martial_arts_record" WHERE "record"='4-1';

Question: What's the record of the UCS 2 - Battle at the Barn when the round was n/a?
SQL: SELECT "record" FROM "mixed_martial_arts_record" WHERE "round"='n/a' AND "event"='ucs 2 - battle at the barn';

Question: What round had a record of 8-2?
SQL: SELECT "round" FROM "mixed_martial_arts_record" WHERE "record"='8-2';