Question

我的mongo数据库中有以下记录

> db.orders.find({});
{
    "_id" : "WEB3",
    "currency" : "USD",
    "company" : "b",
    "user_id" : "b",
    "timestamp" : ISODate("2015-06-26T12:13:18.570Z"),
    "details" : {
        "ordered" : {
            "total" : 1910.4,
            "deliveryVAT" : 120,
            "delivery" : 600,
            "goodsVAT" : 198.4,
            "goodsTotal" : 992
        }
    }
}
{
    "_id" : "WEB1",
    "currency" : "GBP",
    "company" : "a",
    "user_id" : "a",
    "timestamp" : ISODate("2015-06-26T12:11:08.570Z"),
    "details" : {
        "ordered" : {
            "total" : 1910.4,
            "deliveryVAT" : 120,
            "delivery" : 600,
            "goodsVAT" : 198.4,
            "goodsTotal" : 992
        }
    }
}
{
    "_id" : "WEB2",
    "currency" : "GBP",
    "company" : "a",
    "user_id" : "a",
    "timestamp" : ISODate("2015-06-26T12:11:18.570Z"),
    "details" : {
        "ordered" : {
            "total" : 1910.4,
            "deliveryVAT" : 120,
            "delivery" : 600,
            "goodsVAT" : 198.4,
            "goodsTotal" : 992
        }
    }
}

这里是insert，声明：

db.orders.insert( { "_id" : "WEB1", "currency" : "GBP", "company" : "a", "user_id" : "a", "timestamp" : ISODate("2015-06-26T12:11:08.570Z"), "details" : { "ordered" : { "total" : 1910.4, "deliveryVAT" : 120, "delivery" : 600, "goodsVAT" : 198.4, "goodsTotal" : 992 } } });
db.orders.insert( { "_id" : "WEB2", "currency" : "GBP", "company" : "a", "user_id" : "a", "timestamp" : ISODate("2015-06-26T12:11:18.570Z"), "details" : { "ordered" : { "total" : 1910.4, "deliveryVAT" : 120, "delivery" : 600, "goodsVAT" : 198.4, "goodsTotal" : 992 } } });
db.orders.insert( { "_id" : "WEB3", "currency" : "USD", "company" : "b", "user_id" : "b", "timestamp" : ISODate("2015-06-26T12:13:18.570Z"), "details" : { "ordered" : { "total" : 1910.4, "deliveryVAT" : 120, "delivery" : 600, "goodsVAT" : 198.4, "goodsTotal" : 992 } } });

按日期分组然后按货币分组的正确方法是什么，这样我得到的结果类似于：

{ [ "date": "2015-06-26",
  "currency": "USD",
  "total": 1910.4,
  "no_of_orders": 1],
  [ "date": "2015-06-26",
  "currency": "GBP",
  "total": 3820.8,
  "no_of_orders": 2]]
}

从上一篇文章mongodb sort result of aggregate query and display day name我可以获得每天订单的数量，但是我不确定如何管道结果并按货币拆分，然后将结果总计？

任何建议非常感谢

Answer 1

您可以尝试以下聚合管道，按年 - 月 - 日和货币对文档进行分组，以获得所需的结果：

ImageView

示例输出

TextView

按日期分组，然后按currecny和sum mongo记录分组

1 个答案: