当聚合函数为空时，Sequelize 获取结果

Posted 2023-04-12

【中文标题】当聚合函数为空时，Sequelize 获取结果

【英文标题】：Sequelize get results when aggregate function is null

【发布时间】：2021-02-11 08:58:40

【问题描述】：

我有以下返回客户的代码。问题是我只为已下订单并创建地址的客户获得结果。

CustomerModel.findAll(
    attributes: 
      include: [
        [db.sequelize.fn("COUNT", db.sequelize.col("orders.id")), "orderCount"],
        [db.sequelize.literal(`(
          SELECT o.createdDate
          FROM orders AS o
          WHERE
              o.customerId = customer.id
          ORDER BY o.createdDate DESC
          LIMIT 1
      )`),
      'latestOrderDate'],
      [db.sequelize.fn('sum', db.sequelize.col('orders.amount')), 'totalAmount'],
      ]
    ,
    include: [
       model: UserModel, as: 'user' ,
       model: AddressModel, required:false ,
       model: OrderModel, attributes: [], required:false 
    ]
  )

无论有订单或地址，是否有可能获得所有客户？

谢谢！

【参考方案1】：

我最终将两个 sequelize.fn 更改为文字，它就像一个魅力！