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_16993379_1 (rating VARCHAR, rank__overall_ VARCHAR)

### Question ###
What was the rating of the episode with an overall ranking of 190?

### Accurate SQL ###

SELECT rating FROM table_16993379_1 WHERE rank__overall_ = "190"