Deleting documents

We can delete existing documents by using the deleteOne and deleteMany methods as follows:

• Deleting only one document that matches a condition:
  We can delete an existing document like this:

> db.<collection>.deleteOne(<filter>, <options>)

Let's delete the document where the status field equals pending as follows:

> db.user.deleteOne( { status: "pending" } )

You should get the following result:

{ "acknowledged" : true, "deletedCount" : 3 }

• Deleting documents that match a condition:
  We can delete multiple existing documents like this:

> db.<collection>.deleteMany(<filter>, <options>)

Let's delete documents where the status field equals ok:

> db.user.deleteMany({ status : "ok" })

You should get the following result:

{ "acknowledged" : true, "deletedCount" : 2 }

• Deleting all documents:
  We can delete all documents in a collection by passing an empty...