Bulk Operation Methods - MongoDB Shell

In MongoDB, you can perform bulk operations on a collection using different methods. In this page, we will discuss the bulk operation methods that are available in the MongoDB shell.

Syntax

db.collection.bulkWrite(
   [ <operation> ]
)

Where <operation> is an array of one or more operations to perform on the collection.

Examples

Here are some examples of bulk operations using the MongoDB shell:

Insert Operations

Insert multiple documents using the insertMany method:

db.users.bulkWrite([
   {
      insertMany:
         [
            { name: "John", age: 30 },
            { name: "Jane", age: 35 }
         ]
   }
])

Update Operations

Update multiple documents using the updateMany method:

db.users.bulkWrite([
   {
      updateMany:
         {
            filter: { name: "John" },
            update: { $inc: { age: 1 } }
         }
   }
])

Delete Operations

Delete multiple documents using the deleteMany method:

db.users.bulkWrite([
   {
      deleteMany:
         {
            filter: { age: { $gt: 30 } }
         }
   }
])

Output

The bulk operation methods return a BulkWriteResult object that contains information about the number of documents affected, as well as any errors that may have occurred during the operation.

Explanation

Bulk operation methods in the MongoDB shell provide a way to perform multiple insert, update, or delete operations in a single call. This can be more efficient than calling each operation individually, particularly when dealing with large amounts of data.

Use

The bulk operation methods in the MongoDB shell are useful when you need to insert, update, or delete multiple documents in a collection. By using these methods, you can simplify your code and improve the performance of your MongoDB operations.

Important Points

• Bulk operation methods require an array of one or more operations to perform on the collection.
• The bulkWrite method returns a BulkWriteResult object that contains information about the operation.
• These methods are useful when dealing with large amounts of data, as they can improve the performance of MongoDB operations.

Summary

In this page, we discussed the bulk operation methods that are available in the MongoDB shell. We covered the syntax, examples, output, explanation, use, important points, and summary of these methods. By using these methods, you can perform multiple insert, update, or delete operations on a collection in a single call, resulting in more efficient and improved MongoDB operations.