title: SQL Server 2005: what does the letter N for (...WHERE Name LIKE N'F%')
body: <p>Just like the subject stated:</p>
  
  <p>what does the letter <code>N</code> do in SQL like this:</p>
  
  <pre><code>SELECT P.ProductID,
         S.SupplierID,
         S.CompanyName
  FROM Suppliers AS S JOIN Products AS P
       ON (S.SupplierID = P.SupplierID)
  WHERE P.UnitPrice &gt; $10
    AND S.CompanyName LIKE N'F%' -- what is the N for?
  </code></pre>