title: Most efficient way to store a GUID value in SQL Server database
body: <p>Say, if I need to store non-repeating GUID values (something like <code>{AB50C41E-3814-4533-8F68-A691B4DA9043}</code>) in the SQL Server database, what is the most efficient way to define the column to store it? (i.e. as string, a blob, or convert it into a 16-byte integer.)</p>
  
  <p>PS. The column must be defined as an INDEX and be UNIQUE.</p>