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

Question: How many rounds did the IFL: Oakland event have?
SQL: SELECT SUM("round") FROM "mixed_martial_arts_record" WHERE "event"='ifl: oakland';

Question: Which opponent has a record of 3-0?
SQL: SELECT "opponent" FROM "mixed_martial_arts_record" WHERE "record"='3-0';