修改促销功能

Change-Id: Ie7c073982b358af10d5b7d6066cc72c8709ac6fa
diff --git a/src/main/java/com/example/myproject/mapper/PromotionMapper.java b/src/main/java/com/example/myproject/mapper/PromotionMapper.java
index a478835..b6079b3 100644
--- a/src/main/java/com/example/myproject/mapper/PromotionMapper.java
+++ b/src/main/java/com/example/myproject/mapper/PromotionMapper.java
@@ -44,6 +44,11 @@
      * 根据ID更新促销活动(例如软删除)
      */
     int updateById(Promotion promotion);
+    /**
+     * 根据ID更新促销活动(例如软删除)
+     */
+    @Update("update promotion set is_deleted = 1 WHERE id = #{id}")
+    int updateStatusById(@Param("id") Long id);
 
     /**
      * 根据ID查询促销活动