title: How to run U-SQL for all the files in a folder using parameters from ADF?
body: <p>Can't pass the "in" parameter to U-SQL to use all the files in the folder.</p>
  
  <p>in my ADF pipeline, I have the following parameters settings:</p>
  
  <pre><code>"parameters": {
      "in": "$$Text.Format('stag/input/{0:yyyy}/{0:MM}/{0:dd}/*.csv', SliceStart)",
      "out": "$$Text.Format('stag/output/{0:yyyy}/{0:MM}/{0:dd}/summary.csv"
  }
  </code></pre>
  
  <p>And the U-SQL script trys to extract from:</p>
  
  <pre><code>@couponlog =
      EXTRACT 
      Id int,
      [Other columns here]
  FROM @in
  USING Extractors.Csv(skipFirstNRows:1);
  </code></pre>
  
  <p>But I get file not found during execution.
  The files exists in the data lake but I don't know the correct syntax to pass it as a parameter.</p>