用join进行选择中的学说子查询

如何解决用join进行选择中的学说子查询

| schema.yml：

    Membership:
      columns:
        id: { type: integer(4),notnull: true,unique: true,primary: true,autoincrement: true }
        organisation_id: { type: integer(4),notnull: true }
        membership_subcategory_id: { type: integer(4),notnull: true }
        start: { type: timestamp }
        end: { type: timestamp }
        amount: { type: decimal,size: 2 }
        amount_paid: { type: decimal,size: 2 }
        notes: { type: clob (16000000),notnull: false }
        payment_type: { type: string(20),notnull: true }
        order_id: { type: integer(4),notnull: false }
        active: { type: boolean,notnull: true }
        certificate_sent:  { type: timestamp,notnull: false }
        welcome_email_sent:  { type: timestamp,notnull: false }
      relations:
        MembershipSubcategory: { local: membership_subcategory_id,class: MembershipSubcategory,foreign: id }
        Organisation: { local: organisation_id }
        Order: { class: JosVmOrder,local: order_id,foreign: order_id }
        LatestMembership: { local: id,foreign: id }

    JosVmOrder:
      tableName: jos_vm_orders
      columns:
        order_id: { type: integer(4),autoincrement: true }
        user_id: { type: integer(4),notnull: true }
        vendor_id: { type: integer(4),notnull: true }
        order_number: { type: string(32),notnull: false }
        user_info_id: { type: string(32),notnull: false }
        order_total: { type: \'decimal(15,5)\',notnull: true }
        order_subtotal: { type: \'decimal(15,notnull: false }
        order_tax: { type: \'decimal(10,2)\',notnull: false }
        order_tax_details: { type: string(),notnull: true }
        order_shipping: { type: \'decimal(10,notnull: false }
        order_shipping_tax: { type: \'decimal(10,notnull: false }
        coupon_discount: { type: \'decimal(12,notnull: true }
        coupon_code: { type: string(32),notnull: false }
        order_discount: { type: \'decimal(12,notnull: true }
        order_currency: { type: string(16),notnull: false }
        order_status: { type: string(1),notnull: false }
        cdate: { type: integer(4),notnull: false }
        mdate: { type: integer(4),notnull: false }
        ship_method_id: { type: string(255),notnull: false }
        customer_note: { type: string(),notnull: true }
        ip_address: { type: string(15),notnull: true }
      relations:
        User: { class: JosUser,local: user_id,foreignAlias: OrderList }

    JosVmOrderHistory:
      tableName: jos_vm_order_history
      columns:
        order_status_history_id: { type: integer(4),autoincrement: true }
        order_id: { type: integer(4) }
        order_status_code: { type: string(1) }
        date_added: { type: timestamp(25) }
        customer_notified: { type: integer(4),notnull: false }
        comments: { type: clob(16777777),notnull: false }
      relations:
        Order: { class: JosVmOrder,foreign: order_id }
        OrderStatus: { class: JosVmOrderStatus,local: order_status_code,foreign: order_status_code }

    JosVmOrderStatus:
      columns:
        order_status_id: { type: integer(4),autoincrement: true }
        order_status_code: { type: string(1),fixed: true,notnull: true }
        order_status_name: { type: string(64),notnull: false }
        order_status_description: { type: string(),notnull: true }
        list_order: { type: integer(4),notnull: false }
        vendor_id: { type: integer(4),notnull: false }

我需要所有会员资格，他们的订单和最新的历史记录状态。 我正在努力：

$alias = $query->getRootAlias();

    $query->innerJoin (\"$alias.Order o\")
    ->select(\"o.id,o.*\")
    ->addSelect(\"(select os.order_status_name from JosVmOrderStatus os inner join os.JosVmOrderHistory oh on os.order_status_id=oh.order_status_id where oh.order_id=o.order_id order by oh.date_added desc limit 1)\");

但是我无法让addSelect接受联接。最新错误消息是“找不到操作系统类” 我正在使用Doctrine 1.2