修改商品置顶bug

platform-admin/src/main/resources/com/platform/dao/TbCfStationItemDao.xml

@@ -106,11 +106,11 @@
     </select>
 
     <select id="minSort" resultType="int">
-        select min(sort) FROM tb_cf_station_item where item_top=1
+        select IFNULL(min(sort),0) FROM tb_cf_station_item where item_top=1
     </select>
 
     <select id="maxSort" resultType="int">
-         select max(sort) FROM tb_cf_station_item where item_top=1
+         select IFNULL(max(sort),0) FROM tb_cf_station_item where item_top=1
     </select>
 
     <select id="upSortItem" resultType="com.platform.entity.TbCfStationItemEntity">