select a.*, b.item_unit itemUnit from xzx_jhy_order_items a left join xzx_sys_environmental_info b on a.item_type=b.id where a.order_id=#{orderId} select sum(score) from xzx_jhy_order_items where order_id=#{orderId} group by order_id delete from xzx_jhy_order_items where order_id=#{orderId}