title: Start of Week in Amazon Redshift (Sunday Start of the Week)
body: <p>I need to convert Week to start with Sunday (range 1-53, with a Sunday in this year)</p>
  
  <p>Ex. DATE_PART(w,'2020-01-05') (Sunday) 
  This should return 2 instead of 1.</p>
  
  <p>Thanks in advance.</p>