yhlxj/netflix-dao/src/main/resources/mapper/CouponMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.cyksj.mapper.manage.coupon.CouponMapper">

    <select id="checkExCode" resultType="com.cyksj.model.dto.CouponPopularizeDto">
        select cp.id as couponId,
               cdp.id as popularizeId,
               cp.goods_sku_ids,
               cp.type,
               cp.is_renew,
               cdp.coupon_id as popularizeCouponId
        from `coupon` cp
                 left join `coupon_distribute_popularize` cdp on cdp.coupon_id = cp.id
        where cp.deleted is true
          and cdp.deleted is true
          and (cp.ex_code = #{couponExCode} or cdp.ex_code = #{couponExCode}) limit 1
    </select>
</mapper>