Remove nested attribute in dynamodb - node.js

Question

Let's say I have this item in DynamoDB:
{
"customerId": "customer_001",
"customerName": "itsme",
"address": {
"city": "Frankfurt",
"country": "Germany",
"street1": "c/o Company xxx",
"street2": "Europe",
"street3": "PO Box 406",
"zip": "12345"
}
}
I need to remove the nested attribute address.street3 from the item. How I can accomplish this?
Here is my code below; it works perfectly to remove non-nested attributes (for example, customerName), but if I try to use this in nested attributes (like address.street3), it silently fails.
const params = {
TableName: customerTable,
Key: {
customerId: customerId,
},
AttributeUpdates: {
'address.street3':
{
Action: 'DELETE'
}
}
};
dynamoDb.update(params, function (err, data) {
if (err) {
console.error("Unable to update customer. Error JSON:", JSON.stringify(err, null, 2));
}
else {
console.log("UpdateCustomer succeeded:", JSON.stringify(data.Attributes));
responseHelper.ResponseHelper.success(JSON.stringify(data.Attributes), 200, callback);
}
});
What can I remove the nested attribute address.street3?

Answer 1

Here is the code to remove "address.street3" attribute.
var docClient = new AWS.DynamoDB.DocumentClient();
var params = {
TableName : "customer",
Key : {
"customerId": "customer_001"
},
UpdateExpression : "REMOVE address.street3",
ReturnValues : "UPDATED_NEW"
};
console.log("Updating the item...");
docClient.update(params, function(err, data) {
if (err) {
console.error("Unable to update item. Error JSON:", JSON.stringify(err, null, 2));
} else {
console.log("UpdateItem succeeded:", JSON.stringify(data));
}
});