="fu"><a href="../reference/aggregation_map_helpers.html">agg_table_to_agg_map</a></span><span class="op">(</span><span class="va">df</span>, few_colname <span class="op">=</span> <span class="st">"role"</span>, many_colname <span class="op">=</span> <span class="st">"member"</span><span class="op">)</span></span>
<span><span class="co">#&gt; $drummers</span></span>
<span><span class="co">#&gt; [1] "Ringo"   "Charlie"</span></span>
<span><span class="co">#&gt; </span></span>
<span><span class="co">#&gt; $gu