title: Counting unique and group by from multiple spreadsheet
body: <p>I have problem in processing my data. I need to query unique ID from multiple sheets and group by specific criteria.</p>
  
  <p>Here's the google sheet example so you can see the context</p>
  
  <p><a href="https://docs.google.com/spreadsheets/d/1Pudng2o1JjHpapFrxfciyZMRzodRRG9eroCl1yMb9vE/edit?usp=sharing" rel="nofollow noreferrer">https://docs.google.com/spreadsheets/d/1Pudng2o1JjHpapFrxfciyZMRzodRRG9eroCl1yMb9vE/edit?usp=sharing</a></p>
  
  <p>Looking forward for the help!</p>