title: How to merge result IQueryable<T> together?
body: <p>If I get two result IQueryable from different linq Query and I want to merge them together and return one as result, how to to this?
  For example, if:</p>
  
  <pre><code>var q1 = (IQueryable&lt;Person&gt;).....;
  var q2 = (IQueryable&lt;Person&gt;).....;
  </code></pre>
  
  <p>how to merge q1 and q2 together and get result like </p>
  
  <pre><code>var q = (IQueryable&lt;Person&gt;)q1.Union(q2);
  </code></pre>