This worked for me:
<table>
<search>
<query>
index=* | table column_1, column_2, column_3
</query>
</search>
<fields>column_1, column_2</fields>
<option>
...
</option>
<drilldown>
<link>
myapplication/$row.column_3$
</link>
</drilldown>
</table>
The fields-tag decide which columns are shown and the link has still connection to the column_3 you set with the table-tag
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