如何使用多个目标更新多个文档

Question

example documents

{"id": 1, "alive":true},
{"id": 2, "alive":true},
{"id": 3, "alive":true},
{"id": 4, "alive":true}

problem

if got targets like var targetIds []int{1, 3, 4} . Want to update multiple documents's alive value to false. Currently using this way.

var targetIds []int{1, 3, 4}
collection := MongoClient.Database("my_database").Collection("my_collection")
updateDoc := bson.M {
    "$set": bson.M {
        "alive": false,
    }
}
for _, targetId := range targetIds{
    filter := bson.M{
        "id": targetId,
    }
    _, err := collection.UpdateOne(context.Background(), filter, updateDoc)
    if err != nil {
        panic(err)
    }
}

for example in postgresql can use this way

UPDATE [my_table] SET alive = false WHERE id IN [targetIds];

not using for loop. one query like the way in example postgresql query

is there similar way in Go mongodb driver?

Answer 1

Use Collection.UpdateMany() instead of Collection.UpdateOne() , and construct a filter that matches the slice of IDs:

filter := bson.M{
    "id": bson.M{"$in": targetIds},
}
_, err := collection.UpdateMany(context.Background(), filter, updateDoc)
if err != nil {
    panic(err)
}