How many episodes have been directed by David Duchovny?
CREATE TABLE table_13336122_3 (title VARCHAR, directed_by VARCHAR)
SELECT COUNT(title) FROM table_13336122_3 WHERE directed_by = "David Duchovny"
### Context: CREATE TABLE table_13336122_3 (title VARCHAR, directed_by VARCHAR) ### Question: How many episodes have been directed by David Duchovny? ### Answer: SELECT COUNT(title) FROM table_13336122_3 WHERE directed_by = "David Duchovny"