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 Rating (rID VARCHAR, stars VARCHAR)

### Question ###
find the ids of reviewers who did not give 4 star.

### Accurate SQL ###

SELECT rID FROM Rating EXCEPT SELECT rID FROM Rating WHERE stars = 4