visual-studio - 适用于 Visual Studio 的 Azure 流分析工具 : Error when executing aggregated queries - "Object reference not set to an instance of an object"

Question

我们已遵循文档 Use Azure Stream Analytics tools for Visual Studio并使 Visual Studio 能够创建 Azure 流分析项目。

我们使用以下 JSON 格式的本地输入数据创建了一个 Azure 流分析 (ASA) 作业:

[
    {
        "Driver": "Lewis",
        "Speed": 0.8275496959686279,
        "Accelerator": 1,
        "Brakes": 0,
        "Steering": 0,
        "ErsBattery": 0.9398990273475647,
        "Gear": 0,
        "LapTimeMs": 107,
        "EventTime": "2016-04-01T00:00:00.107",
        "PosX": 1593.4061279296875,
        "PosY": 934.5406494140625,
        "PosZ": 101.44535064697266
    },
    {
        "Driver": "James",
        "Speed": 1.8795902729034424,
        "Accelerator": 1,
        "Brakes": 0,
        "Steering": 0,
        "ErsBattery": 0.9865896105766296,
        "Gear": 0,
        "LapTimeMs": 107,
        "EventTime": "2016-04-01T00:00:00.107",
        "PosX": 1593.3990478515625,
        "PosY": 934.5374145507812,
        "PosZ": 101.44610595703125
    },
    {
        "Driver": "Damon",
        "Speed": 0.4023849666118622,
        "Accelerator": 1,
        "Brakes": 0,
        "Steering": 0,
        "ErsBattery": 1,
        "Gear": 0,
        "LapTimeMs": 108,
        "EventTime": "2016-04-01T00:00:00.108",
        "PosX": 1593.411865234375,
        "PosY": 934.5435180664062,
        "PosZ": 101.44485473632812
    }
]

然后我们本地运行查询，如下所示:

SELECT Driver, AVG(Speed) AS AvgSpeed
FROM Input 
GROUP BY Driver, TumblingWindow(second, 10)

执行查询后，我们收到一条错误消息“错误:未将对象引用设置到对象的实例。”

Answer 1

在管理员模式下打开 Visual Studio IDE，使用本地输入运行 ASA 查询，您将获得预期的查询结果。