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  <section class="tex2jax_ignore mathjax_ignore" id="merges-joins">
<h1>Merges &amp; Joins<a class="headerlink" href="#merges-joins" title="Permalink to this headline">#</a></h1>
<p>Here, finally, we combine data sets together. I say finally because this is one of the <em>first</em> things you will do when working with real world data. <code class="docutils literal notranslate"><span 