Hi guys,
I am doing a test of the following:
I got a bunch of json files as data source located in my PC.
My purpose is to create a dataflow, then do all the data transformation there. Go to PowerBI desktop, get data from the data flow to further create report.
Steps
1. Create a dataflow with on-premise gateway, use folder method to get the json files located in my local PC.
2. On powerBI service, I do all the data transformation there including, then I saved the dataflow, all looking good.
2.1 expand all the nested json document (expandContent = Json.Document([Content]))
2.2 rename the atributes
3. Then I have done a manual refresh on the dataflow.
4. On powerBI desktop, get data from the dataflow
However, I cannot see any transformed data inside.
Then I click "transform data".
I found the renamed attributes can be shown, however, I cannot find any data...
I tried to click "refresh preview", but also unable to see any content.
May I ask did I miss anything? Many thanks.
