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_17482534_1 ( written_by VARCHAR, production_code VARCHAR )

### Question ###
How many writers are listed for the episode with a production code of 5008?

### Accurate SQL ###

SELECT COUNT(written_by) FROM table_17482534_1 WHERE production_code = "5008"