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Perform Bulk Operations

You can perform bulk write operations on a collection by using the BulkWrite() method.

Tip

Read the Usage Examples to learn how to run this example.

This example uses the following Restaurant struct as a model for documents in the restaurants collection:

type Restaurant struct {
Name string
RestaurantId string `bson:"restaurant_id,omitempty"`
Cuisine string `bson:"cuisine,omitempty"`
Address interface{} `bson:"address,omitempty"`
Borough string `bson:"borough,omitempty"`
Grades []interface{} `bson:"grades,omitempty"`
}

The omitempty struct tag omits the corresponding field from the inserted document when left empty.

The following example performs the following in order on the restaurants collection:

  • Matches a document in which the name is "Cafe Tomato" and replaces it with a new document

  • Matches a document in which the name is "Cafe Zucchini" and updates the value to "Zucchini Land"

coll := client.Database("sample_restaurants").Collection("restaurants")
models := []mongo.WriteModel{
mongo.NewReplaceOneModel().SetFilter(bson.D{{"name", "Cafe Tomato"}}).
SetReplacement(Restaurant{Name: "Cafe Zucchini", Cuisine: "French"}),
mongo.NewUpdateOneModel().SetFilter(bson.D{{"name", "Cafe Zucchini"}}).
SetUpdate(bson.D{{"$set", bson.D{{"name", "Zucchini Land"}}}}),
}
opts := options.BulkWrite().SetOrdered(true)
results, err := coll.BulkWrite(context.TODO(), models, opts)

View a fully runnable example

After you run the full example, you can find the following document in the restaurants collection:

{
"_id": ObjectId("..."),
"name": "Zucchini Land",
"cuisine": "French"
}

For an example on how to find a document, see Find a Document.

To learn more about performing bulk write operations on a collection and handling potential errors, see Bulk Operations.

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