Updating documents

We can update the existing documents by using the updateOne and updateMany methods as follows:

• Updating a single document:
  We can update an existing document like this:

> db.<collection>.updateOne(<filter>, <update>, <options>)

Let's update the document where the name equals Sébastien in the <filter> parameter with the update data using the $set operator in the <update> parameter, as follows:

> db.user.updateOne(
   { name: "Sébastien" },
   {
     $set: { status: "ok" },
     $currentDate: { lastModified: true }
   }
)

You should get the following result:

{ "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }

The $set operator is used to replace the value of a field with the new value. It takes the following format:

{ $set: { <field1>: <value1>, ... } }

The $currentDate operator is used to set the value of a field to the current date. The...