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_23492454_1 ( title VARCHAR, directed_by VARCHAR )

### Question ###
What was the name of the episode directed by Jessica Yu?

### Accurate SQL ###

SELECT title FROM table_23492454_1 WHERE directed_by = "Jessica Yu"