This is working reference code that performs a live copy from one MongoDB collection to another, with minimal or no visible impact to your production MongoDB clusters. Keeps the destination up-to-date with changes from the source with a typically small amount of lag. There are two conditions...
To copy documents from one collection to another according to expression:<?php // to new collection of same database $collection ->find() ->where('condition', 1) ->copyToCollection('newCollection'); // to new collection in new database $collection ->find() ->where('condition', 1) ...
on,do,don't,won't,can't,shouldn't,say,this,they,at,but,we,his,from,not,by,she,or,as,what,go,their,can,who,get,if,would,her,all,my,make,about,know,will,up,one,time,there,year,so,think,when,which,them,some,me,people,take,out,into,just,see,him,your,come,could,now,than,like...
Using Amazon DocumentDB as a source, you can migrate data from one Amazon DocumentDB cluster to another Amazon DocumentDB cluster. You can also migrate data from an Amazon DocumentDB cluster to one of the other target endpoints supported by AWS DMS. ...
Copy using System; using MongoDB.Driver; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Mongo db = new Mongo(); db.Connect(); //Connect to localhost on the default port. Database test = db.getDB("test"); IMongoCollection things = test.GetCollectio...
To view the size of a collection and other information, use thedb.collection.stats()method from themongoshell. The following example issuesdb.collection.stats()for theorderscollection: copy copied db.orders.stats(); To view specific measures of size, use these methods: ...
(the equivalent of a table). In other words, a single collection in the MongoDB database can hold numerous documents, each with a distinct amount of Fields, Content, and Size. It is not required that one document be comparable to another, as is the case with Relational Databases. Mongo...
You can use Data Transmission Service (DTS) to migrate data from an ApsaraDB for MongoDB standalone instance to another MongoDB database of any available architecture. Supported source and destination databases Note The access methods of the source and destina...
Starting in MongoDB 5.1, you can use the collMod database command to add the expireAfterSeconds option to an existing single-field non-TTL index. Starting in MongoDB 6.0, you can use the prepareUnique and unique options for the collMod command to convert an existing standard index to a uni...
DTS does not support incremental data synchronization from databases that are created after the task starts to run. DTS synchronizes incremental data generated by the following operations: CREATE COLLECTION and CREATE INDEX DROP ...