 Note
      that <em class="parameter"><code>nulls</code></em> is not a text string, just an array:
      it does not need a <code class="literal">'\0'</code> terminator.
     </p></dd><dt><span class="term"><code class="literal">bool <em class="parameter"><code>read_only</code></em></code></span></dt><dd><p><code class="literal">true</code> for read-only execution</p></dd><dt><span class="term"><code class="literal">long <em class="parameter"><code>count</code></em></code></span></dt><dd><p>
      maximum 