Database: products_for_hire

Question: What are the coupon amount of the coupons owned by both good and bad customers?
SQL: SELECT T1.coupon_amount FROM Discount_Coupons AS T1 JOIN customers AS T2 ON T1.coupon_id  =  T2.coupon_id WHERE T2.good_or_bad_customer  =  'good' INTERSECT SELECT T1.coupon_amount FROM Discount_Coupons AS T1 JOIN customers AS T2 ON T1.coupon_id  =  T2.coupon_id WHERE T2.good_or_bad_customer  =  'bad'

Question: What are the payment date of the payment with amount paid higher than 300 or with payment type is 'Check'
SQL: SELECT payment_date FROM payments WHERE amount_paid  >  300 OR payment_type_code  =  'Check'