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_26591309_3 ( official_barb_ratings VARCHAR, episode VARCHAR )

### Question ###
What is the BARB ratings of episode 6?

### Accurate SQL ###

SELECT official_barb_ratings FROM table_26591309_3 WHERE episode = 6