CREATE TABLE "by_county" (
  "county" text,
  "obamapct" text,
  "obamanum" real,
  "mc_cainpct" text,
  "mc_cainnum" real,
  "otherspct" text,
  "othersnum" real,
  "total" real
);

Question: Name the most obama number for mccain being 38.86%
SQL: SELECT MAX("obamanum") FROM "by_county" WHERE "mc_cainpct"='38.86%';

Question: Name the most abama number for mccain being 29266
SQL: SELECT MAX("obamanum") FROM "by_county" WHERE "mc_cainnum"=29266;

Question: Name the county for mccain being 38.78%
SQL: SELECT "county" FROM "by_county" WHERE "mc_cainpct"='38.78%';