CREATE TABLE "table1_158088_2" (
  "episode_no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);

Question: What is the production code for the episode written by Drew Z. Greenberg?
SQL: SELECT "production_code" FROM "table1_158088_2" WHERE "written_by"='Drew Z. Greenberg';

Question: Who directed episode number 3?
SQL: SELECT "directed_by" FROM "table1_158088_2" WHERE "episode_no"=3;