CREATE TABLE table_74356 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Prod. code" FLOAT, "U.S. viewers  ( millions ) " TEXT)

What number episode in the season had a production code of 334?
SELECT MAX("Season #") FROM table_74356 WHERE "Prod. code" = '334'
SELECT MAX("Season #") FROM "table_74356" WHERE "Prod. code" = '334'