CREATE TABLE "table1_14562722_1" (
  "no_in_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real
);

Question: Who directed all the episodes that were written by aaron ehasz & john o'bryan?
SQL: SELECT "directed_by" FROM "table1_14562722_1" WHERE "written_by"='Aaron Ehasz & John O''Bryan';

Question: What was the production code of the episode that was written by michael dante dimartino and directed by lauren macmullan?
SQL: SELECT "production_code" FROM "table1_14562722_1" WHERE "written_by"='Michael Dante DiMartino' AND "directed_by"='Lauren MacMullan';

Question: What was the airdate of the episode that was directed by giancarlo volpe and written by is john o'bryan?
SQL: SELECT "original_air_date" FROM "table1_14562722_1" WHERE "directed_by"='Giancarlo Volpe' AND "written_by"='John O''Bryan';