Table: tv_episode_14
Columns: episode
season
title
directed_by
written_by
original_airdate
production_code_order_they_were_made

Question: Who are all directors when Sherwood Schwartz is the writer?
SQL: SELECT "directed_by" FROM tv_episode_14 WHERE "written_by" = 'Sherwood Schwartz'

Question: What is the highest episode# with the writer Paul West?
SQL: SELECT MAX("episode") FROM tv_episode_14 WHERE "written_by" = 'Paul West'

Question: What is every production code for episode # 13?
SQL: SELECT "production_code_order_they_were_made" FROM tv_episode_14 WHERE "episode" = 13