mongodb

Where is AccountKey for CosmosDB in Azure portal

由 痞子三分冷 提交于 2021-02-08 15:17:14
问题 I am trying to migrate mongodb data to Cosmos db. The migration tool I am using, is asking for "AccountKey" required to connect the Cosmosdb. I am not able to get the account key in azure portal. https://portal.azure.com 回答1: You can find the AccountKey from Settings -> ConnectionString -> Primary Password when you click on your cosmosDB resource 回答2: Navigate to Settings -> Keys to view Primary Key as well as Connection String for CosmosDB in Azure Portal 来源： https://stackoverflow.com

MongoDB project updated record in a nested array in “findAndModify” query

由 爱⌒轻易说出口 提交于 2021-02-08 14:57:36
问题 I am trying to find a record in a nested array, modify it, and then project it. Let's say I have the following collection: { "_id" : ObjectId("56558dfc45a06f51decb4ab7"), "arr" : [ { "cond" : 1.0000000000000000, "upd" : 2.0000000000000000 }, { "cond" : 2.0000000000000000, "upd" : 3.0000000000000000 }, { "cond" : 4.0000000000000000, "upd" : 5.0000000000000000 }, { "cond" : 6.0000000000000000, "upd" : 7.0000000000000000 }, { "cond" : 8.0000000000000000, "upd" : 9.0000000000000000 } ] } I want

Mongoose populate across 2 databases

由 瘦欲@ 提交于 2021-02-08 13:58:10
问题 I have a node app that uses 2 databases. One is the the Names and the other for the rest of all the data. I have this connection setup: // DATABASE CONNECTION var APP_DB_URI = config.APP_DB; // mongodb://localhost:27017/app_db var app_DB = mongoose.createConnection(APP_DB_URI); var name_DB = app_DB.useDb(config.NAME_DB); // 'name_db' This connection is working properly. There's also no problem upon saving data to both app_db and names_db working perfect. But the problem is this: when I try to

mongodb remove document if array count zero after $pull in a single query

由 廉价感情. 提交于 2021-02-08 12:57:16
问题 I have a requirement where my comments schema looks like the following { "_id": 1, "comments": [ { "userId": "123", "comment": "nice" }, { "userId": "124", "comment": "super"} ] } I would like to pull the elements based on the userId field. I am doing the following query comments.update({},{$pull:{comments:{userId:"123"}}}) My requirement is that if the array length became zero after the pull operator I need to remove the entire document for some reason.Is there a away to do this in a single

Building Multiple Indexes at Once

由 ⅰ亾dé卋堺 提交于 2021-02-08 12:27:34
问题 I have a need to build five indexes in a large MongoDB collection. I'm familiar with the ensureIndex operation, but I do not know of a way to create all five of the indexes with a single command. Is this batch index creation possible in MongoDB? 回答1: This is pretty simple within the shell, there is a extention to the collection of createIndexes and you just pass in the keys you wish to create indexes on. db.test.createIndexes([ { "a" : 1 }, { "b" : 1 }, { "c" : 1 }, { "d" : 1 }, { "e" : 1 } ]

Index Bounds on Mongo Regex Search

由 陌路散爱 提交于 2021-02-08 12:20:25
问题 I'm using MongoDB, and I have a collection of documents with the following structure: { fName:"Foo", lName:"Barius", email:"fbarius@example.com", search:"foo barius" } I am building a function that will perform a regular expression search on the search field. To optimize performance, I have indexed this collection on the search field. However, things are still a bit slow. So I ran an explain() on a sample query: db.Collection.find({search:/bar/}).explain(); Looking under the winning plan, I

is It possible to compare two Months Data in single Collection in MongoDB?

由 房东的猫 提交于 2021-02-08 11:58:17
问题 I have collection database with 10 000 000 call records. I want to compare call usage of previous month to next month. Example of collection document { "_id" : ObjectId("54ed74d76c68d23af73e230a"), "msisdn" : "9818441000", "callType" : "ISD" "duration" : 10.109999656677246, "charges" : 200, "traffic" : "Voice", "Date" : ISODate("2014-01-05T19:51:01.928Z") } { "_id" : ObjectId("54ed74d76c68d23af73e230b"), "msisdn" : "9818843796", "callType" : "Local", "duration" : 1, "charges" : 150, "traffic"

NodeJS - MongoClient.Connect with URL to DB Other Than Default

由 房东的猫 提交于 2021-02-08 11:32:31
问题 I'd like to use the MongoClient.Connect(Url) option for connecting from Node and in fact it does work for authenticated connections to the admin database. However, if I try to specify a different database I get an "auth Fails" with code 18. I think this means that the credentials are only setup on the admin database and, unfortunately, I can't change this arrangement (for now, anyway). It seems this Url syntax is the direction the driver is heading, so I'd like to use it if possible. Is there

MongoDB: How to count a field if it's value matches a condition?

由 天涯浪子 提交于 2021-02-08 11:26:32
问题 I have a document that includes a field like this: { ... log: [ { utc_timestamp: ISODate("2014-11-15T10:26:47.337Z"), type: "clicked" }, { utc_timestamp: ISODate("2014-10-15T16:12:51.959Z"), type: "emailed" }, { utc_timestamp: ISODate("2014-10-15T16:10:51.959Z"), type: "clicked" }, { utc_timestamp: ISODate("2014-09-15T04:59:19.431Z"), type: "emailed" }, { utc_timestamp: ISODate("2014-09-15T04:58:19.431Z"), type: "clicked" }, ], ... } How do I get the count of log entries of type "clicked"

高项真题及解析：信息系统项目管理师2020年11月上午真题及答案解析

由 落花浮王杯 提交于 2021-02-08 11:24:14
点击领取>>>软考 16本 电子版官方教材 & 36本 辅导教材 + 27套 官方真题冲刺卷 + 21套 必考知识点6G资料包 2020 下半年信息系统项目管理师上午真题及答案 1 、（ ）使系统的描述及信息模型的表示与客观实体相对应，符合人们的思维习惯，有利于系统开发过程中用户与开发人员的交流和沟通。 A ．原型化方法 B ．面向对象方法 C ．结构化方法 D ．面向服务的方法 答案： B 解析： 面向对象方法使系统的描述及信息模型的表示与客观实体相对应，符合人们的思维习惯，有利于系统开发过程中用户与开发人员的交流和沟通。 2 、 TCP/IP 模型中，（ ）协议属于网络层的协议。 A ． ARP B ． SNMP C ． TCP D ． FTP 答案： A 解析： TCP/IP 模型中，网络层中的协议主要有 IP （互联网协议）、 ICMP （网际控制报文协议）、 IGMP 、 ARP （地址解析协议）和 RARP （反向地址解析协议）等。 3 、（ ）不属于关系型数据库。 A ． Oracle B ． MySQL C ． SQL Server D ． MongoDB 答案： D 解析： 常见的数据库管理系统主要有 Oracle 、 MySQL 、 SQLServer 、 MongoDB 等，这些数据库中，前三种均为关系型数据库，而 MongoDB 是非关系型的数据库。 4
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