查詢之 一對多與多對一查詢的綜合:

關鍵代碼

/**
     * 根據 ID 查找訂單
     * @param orderid
     * @return
     */
    @Select("select * from tbl_orderform where orderform_id = #{orderId}")
        @Results(value={
                @Result(column="orderform_id",property="id",id=true),
                @Result(column="cost",property="cost"),
                @Result(column="orderdate",property="orderdate"),
                @Result(column="shipaddress_id",property="sadres",
                one=@One(select="cn.szxy.mapper.ShipAddressMapper.getShipAddressById")),
                @Result(column="customer_id",property="cus",
                one=@One(select="cn.szxy.mapper.UserMapper.getCustomerById")),
                @Result(column="orderform_id",property="lines",
                many=@Many(select="cn.szxy.mapper.OrderLineMapper.ListAllOrderLines"))  
        })

注意:數據庫列名與實體屬性名對應關係數據庫

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