javascript - 如何从 MongoDB 中的 JSON 数据创建集合？

Question

我有以下 J SON 数据。如何计算以下集合的余额？

"_id" : ObjectId("592595a1bca1350220027666"),
"user_account" : "5-5XX4XX-X06",
"Xns" : {
        "Xn" : [
                {
                        "date" : "2015-09-01",
                        "narration" : "ATM/CASH WDL/01-01-10/17:48:45/0",
                        "amount" : "-2500.00",
                        "category" : "Others",
                        "balance" : "110578.04",
                        "_id" : ObjectId("592595a1bca13502200276ca")
                },
                {
                        "date" : "2015-09-04",
                        "narration" : "EBA//20100104081107",
                        "amount" : "-7206.12",
                        "category" : "Others",
                        "balance" : "103371.92",
                        "_id" : Object Id("592595a1bca13502200276c9")
                }

Answer 1

您可以通过以下方式做到这一点:

mongoimport --db <db-name> --collection <collection-name> --file ~/location/<file-name>.json