How do I delete a record in MongoDB?

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

  1. To delete multiple documents, use db. collection. deleteMany() .
  2. To delete a single document, use db. collection. deleteOne() .

What is the command used to delete records in MongoDB?

remove() method is used to remove documents from a collection. Specifies deletion criteria using query operators. To delete all documents in a collection, pass an empty document ({}). To limit the deletion to just one document, set to true.

What is the difference between remove and delete in MongoDB?

MongoDB’s remove() method is used to remove a document from the collection. remove() method accepts two parameters. … deletion criteria − (Optional) deletion criteria according to documents will be removed. justOne − (Optional) if set to true or 1, then remove only one document.

How do I delete a file in MongoDB?

If you need to delete many documents, consider using the mongo shell or a driver.

  1. Copy the following filter into the Compass query bar and click Find: copy. copied. { “status” : “A” }
  2. For each document, click the delete icon:
  3. The document will be “Flagged for Deletion”, click Delete to confirm.


How do I remove an item from a collection in MongoDB?

Here is the command to delete all the records of a collection in the MongoDB shell or MongoDB Compass shell (_MongoSH). show dbs -> to list all the database use test-database -> to select the database db. getCollection(‘orders’). deleteMany({}) -> to select the collection and deletes all the data.

How do I delete all records in MongoDB Atlas?

To delete all documents from a collection, pass an empty filter document {} to the db. collection. deleteMany() method. The method returns a document with the status of the operation.

How do I delete files in MongoDB Atlas?

You actually can’t bulk delete in MongoDB Atlas. See MongoDB Atlas info on the filter section AKA Data Explorer. However you can run standard queries, like find, remove once you connect to the database using your Atlas credentials.

How do you clear a shell in MongoDB?

2 Answers

  1. cls command.
  2. Ctrl+l (clear screen)


How do I delete a file in Atlas?

Select one or multiple documents in the Project Explorer or the Document Manager, right click and select Delete. If you delete a document by mistake, you can always use the Undo option in the Quick Access toolbar.

How do I edit a collection in MongoDB Atlas?

To edit a field name, value, or type, click on the field name, value, or type. To revert a specific change, hover over the edited field and click the revert icon that appears to the left of the field’s line number.

What is MongoDB Atlas?

MongoDB Atlas is a fully-managed cloud database that handles all the complexity of deploying, managing, and healing your deployments on the cloud service provider of your choice (AWS , Azure, and GCP). MongoDB Atlas is the best way to deploy, run, and scale MongoDB in the cloud.

How do I edit an Atlas TI file?


Just open up the document you want to work on and make sure you have the edit mode toggled.

How do I delete multiple records in MongoDB?

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

  1. To delete multiple documents, use db. collection. deleteMany() .
  2. To delete a single document, use db. collection. deleteOne() .


How do you delete a field in MongoDB?

In MongoDB, you can use the $unset field update operator to completely remove a field from a document. The $unset operator is designed specifically to delete a field and its value from the document.

How do I update a record in MongoDB?

The MongoDB shell provides the following methods to update documents in a collection:

  1. To update a single document, use db. collection. updateOne() .
  2. To update multiple documents, use db. collection. updateMany() .
  3. To replace a document, use db. collection. replaceOne() .


How do I update multiple records in MongoDB?

In MongoDB, you can update multiple documents in the collection using db. collection. updateMany() method.

  1. updateMany() method can be used in the multi-document transactions.
  2. When you update your documents the value of _id field in not change.
  3. It also adds new fields in the documents.


How do I update my MongoDB server version?

Replace the Existing Binaries

  1. Download the binaries for the latest MongoDB revision from the MongoDB Download Page and store the binaries in a temporary location. …
  2. Shutdown the instance.
  3. Replace the existing MongoDB binaries with the downloaded binaries.
  4. Make any required configuration file changes.
  5. Restart the instance.


What is difference between find and findOne?

The findOne() returns first document if query matches otherwise returns null. The find() method does not return null, it returns a cursor.

Is findOne faster than find?

2 Answers. Both are equally fast.

Does findOne return a cursor?

Although similar to the find() method, the findOne() method returns a document rather than a cursor.

What is a cursor in MongoDB?

The Cursor is a MongoDB Collection of the document which is returned upon the find method execution. By default, it is automatically executed as a loop. However, we can explicitly get specific index document from being returned cursor. It is just like a pointer which is pointing upon a specific index value.

What is CRUD operations in MongoDB?

The basic methods of interacting with a MongoDB server are called CRUD operations. CRUD stands for Create, Read, Update, and Delete. These CRUD methods are the primary ways you will manage the data in your databases.

When should I use aggregate in MongoDB?

You can use aggregation operations to:

  1. Group values from multiple documents together.
  2. Perform operations on the grouped data to return a single result.
  3. Analyze data changes over time.


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