fix 订单导出费用类型问题

mec-biz/src/main/resources/config/mybatis/SellOrderMapper.xml

@@ -593,7 +593,7 @@
                SUM(IF(g.type_ != 'INSTRUMENT', so.expect_amount_, 0)) teachingFee
         FROM student_payment_order spo
                  LEFT JOIN sell_order so ON spo.id_ = so.order_id_
-                 LEFT JOIN goods g ON g.id_ = so.goods_id_
+                 LEFT JOIN goods g ON IF(so.parent_goods_id_ IS NOT NULL,g.id_ = so.parent_goods_id_,g.id_ = so.goods_id_)
         WHERE spo.id_ = #{orderId}
     </select>
 </mapper>