eral notranslate"><span class="pre">num_threads</span></code> will be started to perform insertions in parallel.
If <code class="docutils literal notranslate"><span class="pre">vectors</span></code> contains only one query vector, <code class="docutils literal notranslate"><span class="pre">num_threads</span></code> will have no effect.
By default, one thread will be spawned per CPU core.</p></li>
</ul>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>The IDs t