s will merge the first column in each table whose name matches the pattern described by the regular expression and will name the two resulting columns as <code>"countries"</code> and <code>"sector"</code> respectively.</p></li>
</ol></div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p><a href="country_name.html">country_name</a>, <a href="find_keycol.html">find_keycol</a></p></div>
    </div>

  