CREATE TABLE "official_versions" (
  "version" text,
  "length" text,
  "album" text,
  "remixed_by" text,
  "year" real
);

Question: What Version has a Remixed by Perky Park with a Length of 6:38?
SQL: SELECT "version" FROM "official_versions" WHERE "remixed_by"='perky park' AND "length"='6:38';

Question: What is the total number of Year that has an Album of Remixes?
SQL: SELECT SUM("year") FROM "official_versions" WHERE "album"='remixes';

Question: What is listed for the Lengtht that has a Version of Single Version?
SQL: SELECT "length" FROM "official_versions" WHERE "version"='single version';