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MongoDB: How to query a collection named “version”?
For this, use the concept of createCollection() and getCollection(). Following is the query to create a collection with name ‘version’ −
> db.createCollection('version');
{ "ok" : 1 }Let us first create a collection with documents −
> db.getCollection('version').insertOne({"VersionName":"1.0"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e100b47d7df943a7cec4fae")
}
> db.getCollection('version').insertOne({"VersionName":"1.1"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e100b49d7df943a7cec4faf")
}
> db.getCollection('version').insertOne({"VersionName":"1.2"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e100b4cd7df943a7cec4fb0")
}Following is the query to display all documents from a collection with the help of find() method −
> db.getCollection('version').find();This will produce the following output −
{ "_id" : ObjectId("5e100b47d7df943a7cec4fae"), "VersionName" : "1.0" }
{ "_id" : ObjectId("5e100b49d7df943a7cec4faf"), "VersionName" : "1.1" }
{ "_id" : ObjectId("5e100b4cd7df943a7cec4fb0"), "VersionName" : "1.2" }
Updated on: 01-Apr-2020
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