Azure流分析如何展平JSON数组

如何解决Azure流分析如何展平JSON数组

我有一项任务需要平整一些json数组 说我的示例json是，我想展平两个数组temperature_Readings和airpollution读数，即我的结果必须有5行并且air_pollution（数组值）的列应该为空

我该怎么做？

示例JSON

    {
        "sensor_readings": {
            "readings":{
            "temperature_readings": [
                {
                    "date": "02-02-2020","hour": "12","second": "00","temperature": "22.12C"
                },{
                    "date": "02-02-2020","hour": "13","temperature": "22.2C"
                },"hour": "14","temperature": "12.12C"
                },"hour": "15","hour": "16","temperature": "22.12C"
                }
            ],"air_pollution_readings": 
            [
                {
                    "date": "02-02-2020","element":"o3","particulate": "2.2"
                },"particulate": "2.1"
                }
            ]}
        },"siteid": "a1234566","deviceid": "2343434"
    }

谢谢 问候 普里亚（Priya）

解决方法

这里是一个想法，您可以如何“解包”您的一系列阅读材料。

with sensorReadings as (Select sensor_readings.readings.temperature_readings from input),inputValues as (Select message.ArrayValue as Data from sensorReadings CROSS APPLY GetArrayElements(sensorReadings.temperature_readings) as message)


SELECT *
INTO output
FROM inputValues