yhlxj/netflix-dao/src/main/resources/mapper/CouponUserMapper.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.CouponUserMapper">

    <select id="getAvailableCouponList" resultType="com.cyksj.model.views.CouponUserView">
        select distinct cu.id,
                        cp.id as coupon_id,
                        cp.name,
                        cp.goods_type,
                        cp.type,
                        cp.goods_sku_ids,
                        cp.discount,
                        cp.reduce_money,
                        cp.is_valid_time,
                        cu.valid_start_time,
                        cu.valid_end_time,
                        cp.valid_days,
                        cu.created_time,
                        cp.is_renew,
                        cu.status as couponUserStatus,
                        if(ck.id is null, 0, 1) as 'isAvailable'
        from `coupon_user` cu
        left join `coupon` cp on cp.id = cu.coupon_id
        left join `coupon_sku` ck on ck.coupon_id = cp.id
        <if test="goodsId != null">
            and ck.goods_id = #{goodsId}
        </if>
        <if test="goodsId == null">
            and ck.sku_id = #{skuId}
        </if>
        <if test="isRenew != null and isRenew">
            and cp.is_renew = #{isRenew}
        </if>
        and cu.status != 'used'
        where cu.user_id = #{userId}
        and cu.channel != 'exCode'
        <if test="couponId == null">
            order by isAvailable desc
        </if>
        <if test="couponId != null">
            order by case when cp.id = #{couponId} then 2 else isAvailable end desc
        </if>
    </select>

    <select id="countAvailableCouponList" resultType="java.lang.Integer">
        select count(distinct cu.id)
        from `coupon_user` cu
        left join `coupon` cp on cp.id = cu.coupon_id
        left join `coupon_sku` ck on ck.coupon_id = cp.id
        where
        <if test="goodsId != null">
            ck.goods_id = #{goodsId}
        </if>
        <if test="goodsId == null">
            ck.sku_id = #{skuId}
        </if>
        and cu.user_id = #{userId}
        and cu.status = 'unused'
        and cu.channel != 'exCode'
        <if test="isRenew != null and isRenew">
            and cp.is_renew = #{isRenew}
        </if>
    </select>

    <select id="couponCenterList" resultType="com.cyksj.model.views.CouponActiveView">
        select ca.id,
               c.id as coupon_id,
               c.name,
               c.goods_type,
               c.type,
               c.reduce_money,
               c.discount,
               c.scope,
               c.goods_sku_ids,
               c.is_valid_time,
               c.valid_start_time,
               c.valid_end_time,
               c.valid_days,
               c.is_renew,
               ca.num,
               ca.`status`,
               ca.expiry_status,
               ca.remain_num,
               (case
                    when ca.remain_num &lt;= 0 then 'over'
                    when cu.id is null then 'collecting'
                   end)                                                                     as couponStatus,
               (case
                    when remain_num &lt;= 0 then 2
                    when cu.id is null then 0
                   end)                                                                              as `order`
        from coupon_active ca
                 left join coupon c
                           on c.id = ca.coupon_id
                 left join coupon_user cu on cu.coupon_id = c.id and cu.user_id = #{userId}
        where ca.deleted is true
          and c.deleted is true
        and ca.expiry_status != 0
        and ca.`status` != 0
        and cu.id is null
        order by `order`
    </select>
</mapper>