Table: episode_data_30
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code

Question: Who directed "what do you know?"?
SQL: SELECT "directed_by" FROM episode_data_30 WHERE "title" = '"What Do You Know?"'

Question: What was the name of the epiode written by Gary M. Goodrich?
SQL: SELECT "title" FROM episode_data_30 WHERE "written_by" = 'Gary M. Goodrich'

Question: Who directed episode number 179 in the series?
SQL: SELECT "directed_by" FROM episode_data_30 WHERE "no_in_series" = 179

Question: How many people directed "odd man in"?
SQL: SELECT COUNT("directed_by") FROM episode_data_30 WHERE "title" = '"Odd Man In"'