title: Find distinct records after a certain character
body: <p>If I have a table named <code>dbo.cls_members</code> in SQL server and there is a column named <code>meb_refs</code> containing reference numbers like the following </p>
  
  <blockquote>
    <p>"A03LV4COOD17JE-<strong>S</strong>N1AM"</p>
  </blockquote>
  
  <p>How do I find the records of the DISTINCT first character after the "-" symbol. ?</p>
  
  <p>For example in the reference above the bold <strong>"S"</strong> after the "-".</p>