Update Document For Free

To update a document, MongoDB provides update operators, such as $set , to modify field values. <update operator>: { <field1>: <value1>, ... }, <update operator>: { <field2>: <value2>, ... }, ...

By default, the db.collection.update() method updates a single document. Include the option multi: true to update all documents that match the query criteria.

To update a document, MongoDB provides update operators, such as $set , to modify field values. <update operator>: { <field1>: <value1>, ... }, <update operator>: { <field2>: <value2>, ... }, ...

You can update a single document using the updateOne() method on a MongoCollection object. The method accepts a filter that matches the document you want to update and an update statement that instructs the driver how to change the matching document.

How to update the _id of a MongoDB Document? Step1: In the first step, you need to store ObjectId into a variable. Step 2: In the second step, you need to set a new id. Step 3: In the third step, you need to insert new id on a document. Step 4: In the fourth step, you need to remove the old id.

Specifically, in MongoDB 4.4 and greater, db.collection.update() with upsert: true can be run on an existing collection or a non-existing collection. If run on a non-existing collection, the operation creates the collection. In MongoDB 4.2 and earlier, the operation must be run on an existing collection.

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