Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26561509_1 (directed_by VARCHAR, production_code VARCHAR)

### Question ###
How many are directed by episodes with the production code 3T5009?

### Accurate SQL ###

SELECT COUNT(directed_by) FROM table_26561509_1 WHERE production_code = "3T5009"