{
    "expr": "Account.Order{  OrderID: {    \"TotalPrice\":$sum(Product.(Price * Quantity)),    \"Items\": Product.\"Product Name\"  }}",
    "dataset": "dataset5",
    "bindings": {},
    "result": {
        "order103": {
            "TotalPrice": 90.57000000000001,
            "Items": [
                "Bowler Hat",
                "Trilby hat"
            ]
        },
        "order104": {
            "TotalPrice": 245.79000000000002,
            "Items": [
                "Bowler Hat",
                "Cloak"
            ]
        }
    }
}