azure - ADF V2 Error the string character '@' at position is not expected

Question

这是 MSDN 的双重帖子，但在那里没有得到任何帮助，所以我希望一些专家在这里看到它。

我从在 https://docs.microsoft.com/en-us/azure/data-factory/tutorial-incremental-copy-powershell 找到的例子开始

"name": "SinkDataset",
    "properties": {
        "type": "AzureBlob",
        "typeProperties": {
            "folderPath": "adftutorial/incrementalcopy",
            "fileName": "@CONCAT('Incremental-', pipeline().RunId, '.txt')", 
            "format": {
                "type": "TextFormat"
            }
        },

我的代码变成了

"typeProperties": {
            "fileName": "S1073_PBI_DAY_JUSTIF_VW.csv",
            "folderPath": "@CONCAT('bict2233/data-in/day/', @{dataset().TriggerRunTime})",
            "format": {
                "type": "TextFormat",
....

但我收到这个错误

Invoke-AzureRmDataFactoryV2Pipeline : HTTP Status Code: BadRequest
Error Code: BadRequest
Error Message: The template validation failed: 'the string character '@' at position '32' is not expected..'.
Request Id: 55664c55-8a20-403b-9fbf-a4c24166b473
Timestamp (Utc):12/14/2017 15:37:59
At C:\ADF\bict2233_A\Powershell\T.ps1:25 char:10
+ $runId = Invoke-AzureRmDataFactoryV2Pipeline -PipelineName "lstgDayJu ...
+          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : CloseError: (:) [Invoke-AzureRmDataFactoryV2Pipeline], ErrorResponseExceptio

知道为什么吗？

谢谢

Answer 1

我确实发现了问题。

"folderPath": "@concat('bict2233/data-in/day/', formatDateTime(dataset().TriggerRunTime,'yyyyMMddHH'))"

应该像这样使用

"folderPath": {
"value": "@concat('bict2233/data-in/day/', formatDateTime(dataset().TriggerRunTime,'yyyyMMddHH'))",
"type": "Expression"
}