Use Case:
When building data flows with data sets in millions of rows, it's hard to test if the logic works across those rows unless I add filter tiles that filter out data at specific points during the Data Flow build process. This can add complexity when adding many test cases at specific points.
The Idea:
It would be ideal to have a drop-down next to the preview button to add a predefined series of filters based on the input data sets. So you would select a dropdown that contains the list of the data inputs you have brought into the Data Flow, and then you can build your filters of those inputs and save them as "Test Case - Northern America Only" for example. Then, when updates are made to that data flow in the future, you can re-use those testing filters.
