Question

我有以下种类的收藏

{
    "_id" : ObjectId("5bbb299f06229dddbaab553b"),
    "phone" : "+38 (031) 231-23-21",
    "date_call" : "2018-10-08",
    "adress_delivery" : "1",
    "quantity_concrete" : "1",
    "state" : "200",
    "comments" : "1",
    "is_order" : "n",
    "date_delivery" : "",
    "quantity_orders" : "",
    "summ_order" : "",
    "profit" : "",
    "id" : "0"
}

在终端中请求时

db.getCollection("customers").find(
    {
        "$and" : [
            {
                "date_call" : {
                    "$lte" : "2018-10-10"
                }
            },
            {
                "date_call" : {
                    "$gte" : "2018-09-24"
                }
            }
        ]
    },
    {
        "phone" : 1,
        "is_order" : 1
    }
);

我得到了答案

{ 
  "_id" : ObjectId("5bbb299f06229dddbaab553b"),
  "phone" : "+38 (031) 231-23-21",
  "is_order" : "n"
}

在nodeJS中请求相同的查询时

client.db(“mongoDB”).collection("customers").find(
    {
        "$and": [
            {
                "date_call": {
                    "$lte" : "2018-10-14"
                }
            },
            {
                "date_call": {
                    "$gte" : "2018-09-24"
                }
            }
        ]
    },
    {
        “phone”: 1,
        "is_order": 1
    }
)

我得到一个完整的答案，而不是查询中设置的“电话”和“ is_order”。请告诉我如何只获取指定的数据？

Answer 1

您可以通过这种方式使用project功能

client.db("mongoDB").collection("customers").find(
    {
        "$and": [
            {
                "date_call": {
                    "$lte" : "2018-10-14"
                }
            },
            {
                "date_call": {
                    "$gte" : "2018-09-24"
                }
            }
        ]
    })
    .project(
    {
        "phone": 1,
        "is_order": 1
    })
    .toArray((err, res) => {
        //your code here
    })

也基于@Astro评论传递{fields:{"phone": 1, "is_order":1}}作为投影对象

如何获取特定数据，但在mongodb / nodejs中不是完整答案？

1 个答案: