CREATE TABLE table_26561509_1 (directed_by VARCHAR2, production_code VARCHAR2)

How many are directed by episodes with the production code 3T5009?
SELECT COUNT(directed_by) FROM table_26561509_1 WHERE production_code = "3T5009"
SELECT COUNT("directed_by") FROM "table_26561509_1" WHERE "3T5009" = "production_code"