CREATE TABLE "table1_22904752_1" (
  "no" real,
  "num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "rank_week" text,
  "original_air_date" text
);

Question: When is the original air date written by sean whitesell?
SQL: SELECT "original_air_date" FROM "table1_22904752_1" WHERE "written_by"='Sean Whitesell';

Question: Who is no. 79 directed by?
SQL: SELECT "directed_by" FROM "table1_22904752_1" WHERE "no"=79;

Question: What is the # when u.s. viewers  (million) is 17.44?
SQL: SELECT COUNT("num") FROM "table1_22904752_1" WHERE "u_s_viewers_million"='17.44';

Question: How many # were written by david hoselton?
SQL: SELECT MAX("num") FROM "table1_22904752_1" WHERE "written_by"='David Hoselton';