Question: What was the airdate of the episode of production code 214?
SQL: SELECT "Original air date" FROM "1-28787871-3" WHERE "Production Code" = 214.0;

Question: How many numbers in the season have an air date of June 3, 2012?
SQL: SELECT COUNT("No in. season") FROM "1-28787871-3" WHERE "Original air date" = 'June 3, 2012';

Question: What is the highest production code of the episodes having a US viewership of exactly 2.3?
SQL: SELECT MAX("Production Code") FROM "1-28787871-3" WHERE "U.S. viewers (millions)" = '2.3';

Question: How many millions of US viewers watched the episode titled "Happy Howl-O-Ween"?
SQL: SELECT "U.S. viewers (millions)" FROM "1-28787871-3" WHERE "Title" = '"Happy Howl-O-Ween"';