DOCTYPE mapper3PUBLIC "-//mybatis.org//DTD mapper 3.0//EN"4"http://mybatis.org/dtd/mybatis-3-mapper.dtd">5<mappernamespace="com.xiaobiti.pojo.Order">67SELECT o.*,p.id as product_id,p.name,p.price FROM tb_order o,tb_product p,orderitem oi where o.id = oi.order_id AND p...