title: Get string representation of a sql DateTime day
body: <p>Let's say i have a sql datetime of '1 May 2009' or '12 May 2009'.
  Is there any built in sql function / operation i can perform on the dates above to return the string representation of the DAY of the date?</p>
  
  <p>So for '1 May 2009' i'll get "Friday" as the answer (case not important).
  For '12 May 2009' i'll get "Tuesday".</p>