query: SELECT avg(credit_score) FROM customer WHERE cust_id NOT IN (SELECT cust_id FROM loan)
question: Find the average credit score of the customers who do not have no loan.
query_toks: SELECT avg ( credit_score ) FROM customer WHERE cust_id NOT IN ( SELECT cust_id FROM loan )
query_toks_no_value: select avg ( credit_score ) from customer where cust_id not in ( select cust_id from loan )
question_toks: Find the average credit score of the customers who do not have no loan.