title: Why searchkick is returning only distinct values on id?
body: <p>I have a rails model that is the result of sql view. This is union of same table and somethimes happend that i have two rekords with same id but different one column, what is correct. The problem is that i want to use searchkick in this model. So i add searchkick to rails model but after call method <code>.search.results</code> returns records that are uniq by id.
  So for example we can call it <code>ExtendedModel</code></p>
  <pre class="lang-rb prettyprint-override"><code>class ExtendedModel
    searchkick
  end
  </code></pre>
  <p>then in the console</p>
  <pre class="lang-rb prettyprint-override"><code>&gt; ExtendedModel.pluck(:id)
  =&gt;[1, 1] # this retunrs [1, 1]
  # but when call search on it then returns only uniq
  &gt; ExtendedModel.search.results.pluck(:id)
  =&gt;[1]
  </code></pre>
  <p>Any idea how to fix this?</p>