DynamoDB: Query Count (Guide w/ Code Examples)

To query the count of items in a DynamoDB table using the JavaScript SDK, you can use the query operation and set the Select parameter to COUNT.

var params = {
    TableName: "myTable",
    Select: "COUNT"
};

dynamodb.query(params, function(err, data) {
    if (err) {
        console.log("Error", err);
    } else {
        console.log("Success", data.Count);
    }
});