Question: Awesome!  Can you tell me what the date issued is for each of these two coupon_ids?
SQL: SELECT date_issued from discount_coupons where coupon_id in  ( SELECT T1.coupon_id 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_id FROM Discount_Coupons AS T1 JOIN customers AS T2 ON T1.coupon_id  =  T2.coupon_id WHERE T2.good_or_bad_customer  =  'bad' )