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_17356205_1 (title VARCHAR, directed_by VARCHAR)

### Question ###
How many titles are given for the episode directed by Joanna Kerns?

### Accurate SQL ###

SELECT COUNT(title) FROM table_17356205_1 WHERE directed_by = "Joanna Kerns"