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What does createdCollectionAutomatically mean in MongoDB?
If a collection does not exist then MongoDB creates a collection in indexing part. The createdCollectionAutomatically tells that the operation created a collection.
For our example, let us create a collection with an index −
> db.createCollectionDemo.createIndex({"ClientCountryName":1});This will produce the following output −
{
"createdCollectionAutomatically" : true,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"ok" : 1
}Let us create a collection with documents −
> db.createCollectionDemo.insertOne({"ClientName":"Larry","ClientCountryName":"US"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd2950be3526dbddbbfb612")
}Following is the query to display all documents from a collection with the help of find() method −
> db.createCollectionDemo.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cd2950be3526dbddbbfb612"),
"ClientName" : "Larry",
"ClientCountryName" : "US"
}
Updated on: 30-Jul-2019
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