package cn.lili.modules.promotion.mapper;
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import cn.lili.modules.promotion.entity.dos.Seckill;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import org.apache.ibatis.annotations.Update;
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/**
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* 秒杀活动数据处理层
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*
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* @author Chopper
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* @since 2020/8/21
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*/
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public interface SeckillMapper extends BaseMapper<Seckill> {
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/**
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* 修改秒杀活动数量
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*
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* @param seckillId 秒杀活动ID
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*/
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@Update("UPDATE li_seckill SET goods_num =( SELECT count( id ) FROM li_seckill_apply WHERE seckill_id = #{seckillId} ) WHERE id = #{seckillId}")
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void updateSeckillGoodsNum(String seckillId);
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}
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