altColor">
<td class="colFirst"><code>static java.lang.Object</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../tech/v3/dataset/Reductions.html#sum-java.lang.Object-">sum</a></span>(java.lang.Object&nbsp;colname)</code>
<div class="block">Returns a summation reducer that sums an individual source column.</div>
</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
<!--   -->
</a>
<h3>Methods inherited from