查询重复领取的优惠券
//查询8888888用户优惠券状态为未使用且数量大于2的用户领取过的优惠券 SELECT discount_coupon_id,count(discount_coupon_id) as c FROM `faith_user_discount_coupon` where user_id='88888888' and `status`='1' GROUP BY discount_coupon_id having c>1
标签：优惠券,discount,重复,查询数据库,coupon,mysql,id From： https://www.cnblogs.com/cgy-home/p/17568384.html