title: Permissions required to run 'ALTER DATABASE SET SINGLE_USER' statement on SQL Server 2008
body: <p>I've came across the case when the following statement throws an error saying it can't be executed because of the permission:</p>
  
  <pre><code>ALTER DATABASE [{0}] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
  </code></pre>
  
  <p>Couldn't find anywhere on the web any information about the permissions it needs.</p>