我在我的租戶部署了下面的例子:Cumulocity租客不會響應
創建MeasurementCreated方面HourlyAvgMeasurementDeviceContext 分區measurement.source.value;
@Name("Creating_hourly_measurement")
context HourlyAvgMeasurementDeviceContext
insert into CreateMeasurement
select
m.measurement.source as source,
current_timestamp().toDate() as time,
"c8y_AverageTemperatureMeasurement" as type,
{
"c8y_AverageTemperatureMeasurement.T.value", avg(cast(getNumber(m, "c8y_TemperatureMeasurement.T.value"), double)),
"c8y_AverageTemperatureMeasurement.T.unit", getString(m, "c8y_TemperatureMeasurement.T.unit")
} as fragments
from MeasurementCreated.win:time(1 hours) m
where getObject(m, "c8y_TemperatureMeasurement") is not null
output last every 1 hours;
後來我想了一小時,以獲取平均溫度值(用單位最好)如下:
Select event.c8y_AverageTemperatureMeasurement.T.value from CreateMeasurement event;
,但我得到,同時部署查詢作爲一個錯誤:
錯誤啓動語句:無法驗證select-clause表達式'event.c8y_AverageTemperatureMeasure ...(47個字符)':無法將屬性'event.c8y_AverageTemperatureMeasurement.T.value'解析爲流中的流或嵌套屬性[Select event.c8y_AverageTemperatureMeasurement .T.value來自CreateMeasurement事件
請問您能協助嗎?
您可以嘗試刪除完整的模塊並使用相同的內容創建一個新模塊。你的代碼正在爲我工作,並且錯誤顯示'event.c8y_AverageTemperatureMeasurement.T.value',但是這部分代碼並不存在。 – TyrManuZ
我試圖從以下片段中獲得片段中的臨時值: 「c8y_AverageTemperatureMeasurement.T.value」,avg(cast(getNumber(m,「c8y_TemperatureMeasurement.T.value」),double)), 「 c8y_AverageTemperatureMeasurement.T.unit「,getString(m,」c8y_TemperatureMeasurement.T.unit「) } as fragments –