src/main/resources/mapper/modules/MallGoodsCategoryMapper.xml
@@ -44,7 +44,7 @@ b.name child_name, b.parent_id child_parent_id from mall_goods_category a inner join mall_goods_category b on a.id=b.parent_id left join mall_goods_category b on a.id=b.parent_id where a.parent_id = 0 </select>