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Tableau Prep: Wildcard union for Tableau extracts

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I'd like to be able to wildcard union .hyper and .tde files together, because I have a script that downloads a set of hyper files from various external sources, and I won't know the filenames in advance. So I'd like my Prep input step to automatically detect whatever hyper files I have in a given folder together.

 

 

 

There's no good way I know of to automate a Prep workflow that has to perform this work, because without the ability to wildcard union these files, I'd need to hack the .tfl file to dynamically point the input connector to each separate file, and run each Flow separately, then union the final output CSVs. And you know how reticent I am to do anything hacky like that!

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