{
    "tables": [
        {
            "title": "Номера внутри заказа",
            "columns": [
                "order_id",
                "id",
                "status",
                "happened_at",
                "rn"
            ],
            "rows": [
                [
                    "101",
                    "3",
                    "delivered",
                    "2026-01-10 12:00:00",
                    "1"
                ],
                [
                    "101",
                    "2",
                    "packed",
                    "2026-01-10 12:00:00",
                    "2"
                ],
                [
                    "101",
                    "1",
                    "created",
                    "2026-01-10 10:00:00",
                    "3"
                ],
                [
                    "101",
                    "7",
                    "imported",
                    "2026-01-10 09:00:00",
                    "4"
                ],
                [
                    "102",
                    "5",
                    "cancelled",
                    "2026-01-10 11:00:00",
                    "1"
                ],
                [
                    "102",
                    "4",
                    "created",
                    "2026-01-10 09:00:00",
                    "2"
                ],
                [
                    "103",
                    "6",
                    "created",
                    "2026-01-10 08:00:00",
                    "1"
                ]
            ]
        },
        {
            "title": "Последний статус",
            "columns": [
                "order_id",
                "id",
                "status",
                "happened_at"
            ],
            "rows": [
                [
                    "101",
                    "3",
                    "delivered",
                    "2026-01-10 12:00:00"
                ],
                [
                    "102",
                    "5",
                    "cancelled",
                    "2026-01-10 11:00:00"
                ],
                [
                    "103",
                    "6",
                    "created",
                    "2026-01-10 08:00:00"
                ]
            ]
        },
        {
            "title": "Почему одного MAX(id) недостаточно",
            "columns": [
                "order_id",
                "MAX(id)"
            ],
            "rows": [
                [
                    "101",
                    "7"
                ],
                [
                    "102",
                    "5"
                ],
                [
                    "103",
                    "6"
                ]
            ]
        }
    ]
}