[</span><a href="column.html#Column"><span class="Identifier">Column</span></a><span class="Other">]</span>
  <span class="Identifier">primary</span><span class="Operator">*</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class="Identifier">string</span><span class="Other">]</span>
  <span class="Identifier">query</span><span class="Operator">*</span><span class="Other">:</span> <span class="Identifier">seq</span><span class="Other">[</span><span class