<resultMap type ="Customer" id= "customerMap">
<id property ="id" column="id" />
<result property ="name" column="name" />
<result property ="age" column="age" />
<result property ="address" column="address" />
<collection property ="orders" ofType="Order" >
<id property ="orderId" column="oid" />
<result property ="orderPrice" column="price" />
<result property ="orderNumber" column="orderNumber" />
</collection>
</resultMap>
<select id ="selectCustomerById" parameterType="string" resultMap="customerMap" >
select c.id,c.name,c.age,c.address,o.id oid,o.price,o.orderNumber,o.cid from customer c,orders o where c.id=o.cid and c.id=#{id}
</select>
<!-- 批量插入数据 -->
<insert id ="insertBatch" parameterType="list" >
insert into customer(id,name,age,address) values
<foreach collection ="list" item="obj" separator="," >
(#{obj.id},#{obj.name},#{obj.age},#{obj.address})
</foreach>
</insert>
