Delete Documents in MongoDB

 

Delete Documents

The MongoDB shell provides the following methods to delete documents from a collection:

• To delete multiple documents, use db.collection.deleteMany().

• To delete a single document, use db.collection.deleteOne().

Delete All Documents

To delete all documents from a collection, pass an empty filter document {} to the db.collection.deleteMany() method.

To delete all documents from the sample_mflix.movies collection:

use sample_mflix
db.movies.deleteMany({})

The method returns a document with the status of the operation. For more information and examples, see deleteMany().

 

Delete All Documents that Match a Condition

You can specify criteria, or filters, that identify the documents to delete. The filters use the same syntax as read operations.

To delete all documents that match a deletion criteria, pass a filter parameter to the deleteMany() method.

To delete all documents from the sample_mflix.movies collection where the title equals "Titanic":

use sample_mflix
db.movies.deleteMany( { title: "Titanic" } )

The method returns a document with the status of the operation. For more information and examples, see deleteMany().

Delete Only One Document that Matches a Condition

To delete at most a single document that matches a specified filter (even though multiple documents may match the specified filter) use the db.collection.deleteOne() method.

To delete the first document from the sample_mflix.movies collection where the cast array contains "Brad Pitt":

use sample_mflix
db.movies.deleteOne( { cast: "Brad Pitt" } )