able_customer</a></span><span class="op">(</span><span class="va">rfm_data_customer</span>, <span class="va">customer_id</span>,</span></span>
<span class="r-in"><span><span class="va">number_of_orders</span>, <span class="va">recency_days</span>, <span class="va">revenue</span>, <span class="va">analysis_date</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># histogram</span></span></span>
<span class="r-in"><span><span class="f