Table: tv_episodes_17
Columns: series
season
title
directed_by
written_by
original_air_date
u_s_viewers_in_millions

Question: What is the season number for Series #23, the Runway Job?
SQL: SELECT "season" FROM tv_episodes_17 WHERE "series" = 23

Question: What series was directed by Mark Roskin?
SQL: SELECT MIN("series") FROM tv_episodes_17 WHERE "directed_by" = 'Mark Roskin'

Question: How many were written by Peter Winther?
SQL: SELECT COUNT("written_by") FROM tv_episodes_17 WHERE "directed_by" = 'Peter Winther'

Question: How many directors were in Season 2?
SQL: SELECT COUNT("directed_by") FROM tv_episodes_17 WHERE "season" = 2