秒杀活动：纠正秒杀库存和秒杀总库存扣减错误的问题

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/seckill/SeckillActivityDO.java

@@ -77,8 +77,7 @@ public class SeckillActivityDO extends BaseDO {
     private Integer singleLimitCount;
 
     /**
-     * 秒杀库存-秒杀下单时怎加，恢复库存是减少
-     * 也就是说这个是记录当前秒杀活动用户购买的商品数量和
+     * 秒杀库存(剩余库存秒杀时扣减)
      */
     private Integer stock;
     /**

yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/seckill/seckillactivity/SeckillActivityMapper.java

@@ -50,9 +50,8 @@ public interface SeckillActivityMapper extends BaseMapperX<SeckillActivityDO> {
         Assert.isTrue(count > 0);
         return update(null, new LambdaUpdateWrapper<SeckillActivityDO>()
                 .eq(SeckillActivityDO::getId, id)
-                .gt(SeckillActivityDO::getTotalStock, 0)
-                .setSql("stock = stock + " + count)
-                .setSql("total_stock = total_stock - " + count));
+                .gt(SeckillActivityDO::getStock, count)
+                .setSql("stock = stock - " + count));
     }
 
     /**
@@ -66,8 +65,7 @@ public interface SeckillActivityMapper extends BaseMapperX<SeckillActivityDO> {
         Assert.isTrue(count > 0);
         return update(null, new LambdaUpdateWrapper<SeckillActivityDO>()
                 .eq(SeckillActivityDO::getId, id)
-                .setSql("stock = stock - " + count)
-                .setSql("total_stock = total_stock + " + count));
+                .setSql("stock = stock + " + count));
     }
 
     default PageResult<SeckillActivityDO> selectPage(AppSeckillActivityPageReqVO pageReqVO, Integer status) {