Table: colbert_episodes
Columns: episode
the_w_rd
guest
introductory_phrase
original_airdate
production_code

Question: What was the introductory phrase for episode 794?
SQL: SELECT "introductory_phrase" FROM colbert_episodes WHERE "episode" = 794

Question: What date did the episode originally air on with salvatore giunta as a guest?
SQL: SELECT "original_airdate" FROM colbert_episodes WHERE "guest" = 'Salvatore Giunta'

Question: How many production codes were there for the episode that aired on November 15?
SQL: SELECT COUNT("production_code") FROM colbert_episodes WHERE "original_airdate" = 'November 15'