title: Count unique values in a set date range
body: <p>I'm in need to count how many unique values (names) are in a column based on a date range (could be a single day or several days).</p>
  
  <p>My data is stored as following.</p>
  
  <p>Column A = Dates mm/dd/yy <br>
  Column B = Names</p>
  
  <p>Unfortunately, the way the data is imported into my file, does not give me any other option but to use names as a reference for unique employee identification, no IDs are listed.</p>
  
  <p>The idea is to have a 2 cells, for "From" and "To" to enter the dates to perform the unique value calculations and to return the result to another cell.</p>
  
  <p>I've made a sample of more or less what I'm looking for. You'll find a tab where I'd like to input the dates and a tab with a sample DB.</p>
  
  <p><a href="http://public.justcloud.com/e04wqfgc89.83937591" rel="nofollow">http://public.justcloud.com/e04wqfgc89.83937591</a></p>
  
  <p>These unique values will allow me to perform additional calculations needed for a report.</p>