Question: How many people directed "Through The Looking Glass"?
SQL: SELECT COUNT("Directed by") FROM "1-23937219-3" WHERE "Title" = '"Through The Looking Glass"';

Question: How many people directed episode 7 In the season?
SQL: SELECT COUNT("Directed by") FROM "1-23937219-3" WHERE "Season #" = 7.0;

Question: How many original air dates were there for the episode with production code 212?
SQL: SELECT COUNT("Original air date") FROM "1-23937219-3" WHERE "Prod. code" = 212.0;

Question: What is the  production code for "Road Trip (aka "The Kiss")"?
SQL: SELECT "Prod. code" FROM "1-23937219-3" WHERE "Title" = '"Road Trip (aka "The Kiss")"';

Question: What is the production code for episode 31 in the series?
SQL: SELECT MIN("Prod. code") FROM "1-23937219-3" WHERE "Series #" = 31.0;