query: SELECT payment_method_code ,  count(*) FROM customers GROUP BY payment_method_code
question: For each payment method, return how many customers use the thing.
query_toks: SELECT payment_method_code , count ( * ) FROM customers GROUP BY payment_method_code
query_toks_no_value: select payment_method_code , count ( * ) from customers group by payment_method_code
question_toks: For each payment method, return how many customers use the thing.