title: Ambiguous Invocation IQueryable or IEnumerable
body: <p>I instantiated a context and want to write a simple query:</p>
  
  <pre><code>var result = db.Set.Where(x =&gt; x.Id == num).Select(whatever);
  </code></pre>
  
  <p>and I can't get rid of the red squiggly under <code>Where</code> complaining about an ambiguous invocation between <code>System.Collections.Generic.IEnumerable</code> and <code>System.Linq.IQueryable.</code> <code>System.Linq</code> is specifically referenced, and <code>System.Collections.Generic</code> is not referenced anywhere in the project. How can I tell the code that I want to use <code>System.Linq.IQueryable</code>?</p>