title: Use OR Clause in queryover in NHibernate
body: <p>I am using Nhibernate. I am writing query through queryover method. I am able to write and clause as in code below. Its working fine. </p>
  
  <pre><code>db.QueryOver(Of Users)()
    .Where(Function(x) x.Role = "Guest")
    .And(Function(x) x.Block = 0)
    .And(Function(x) x.APPID = appId)
    .List();
  </code></pre>
  
  <p>But I want to use <code>Or</code> clause instead of <code>And</code>, or combination of both. How can I implement this. Thanks</p>