CREATE TABLE table_21386 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Original air date" CLOB, "Prod. code" FLOAT)

How many episodes have the season number of 1?
SELECT COUNT("Series #") FROM table_21386 WHERE "Season #" = '1'
SELECT COUNT("Series #") FROM "table_21386" WHERE "Season #" = '1'