mongodbHow to remove a field from MongoDB?

To remove a field from MongoDB, use the $unset operator. This operator removes the specified field from the document.

Example

db.collection.update(
   { _id: 1 },
   { $unset: { field: "" } }
)

The output of the above example will be:

WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

Code explanation

• db.collection.update: This is the command used to update a document in MongoDB.
• { _id: 1 }: This is the filter used to specify the document to update.
• { $unset: { field: "" } }: This is the update operator used to remove the specified field from the document.

Helpful links

• MongoDB Documentation - $unset

Edit this code on GitHub