How can multiple documents be updated in bulk in MongoDB?

In MongoDB, you can use the updateMany() method to bulk update multiple documents. This method takes a query condition and an update operation as parameters, and then updates all documents that meet the query condition.

For example, if we have a collection named “users” with multiple documents, and we want to update the “role” field to “admin” for all documents with a status of “active”, we can use the following code:

db.users.updateMany(
   { status: "active" },
   { $set: { role: "admin" } }
)

In the code above, the first parameter { status: “active” } is the query condition used to match all documents with status as active; the second parameter { $set: { role: “admin” } } is the update operation used to update the role field of matched documents to admin.

The updateMany() method can efficiently bulk update multiple documents.