CREATE TABLE table_30022 ("Series #" FLOAT, "Episode #" CLOB, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( millions ) " CLOB)

Who directed episode number 23 in the season?
SELECT "Directed by" FROM table_30022 WHERE "Episode #" = '23'
SELECT "Directed by" FROM "table_30022" WHERE "Episode #" = '23'