title: Data factory azure blob source - wildcard
body: <p>I was led to believe that you can wildcard the filename property in an Azure Blob Table source object.</p>
  
  <p>I want to pick up only certain csv files from blob storage that exist in the same directory as other files I don't want to process:</p>
  
  <p>i.e. </p>
  
  <p>root/data/GUJH-01.csv</p>
  
  <p>root/data/GUJH-02.csv</p>
  
  <p>root/data/DFGT-01.csv</p>
  
  <p>I want to process GUJH*.csv and not DFGT-01.csv</p>
  
  <p>Is this possible?  If so, why is my blob source validation failing, informing me that the file does not exist (The message reports that the root/data blob does not exist.</p>
  
  <p>Thanks in advance.</p>