title: How to fix "Only one expression can be specified in the select list when the subquery is not introduced with EXISTS" error?
body: <p>I'm trying to run the following query on MS SQL 2012 Express:</p>
  
  <pre><code>Select (
      Select Id, Salt, Password, BannedEndDate
      from Users
      where username = '" + LoginModel.Username + "'
  ), (
      Select Count(*)
      From LoginFails
      where username = '" + LoginModel.Username + "'
      And IP = '" + Request.ServerVariables["REMOTE_ADDR"] + "')"
  );
  </code></pre>
  
  <p>But I get the following error: </p>
  
  <blockquote>
    <p>Only one expression can be specified in the <code>select</code> list when the subquery is not introduced with <code>EXISTS</code>.</p>
  </blockquote>
  
  <p>How can I solve this problem?</p>