ss="va">PooledConnectionHandler</span><span class="op">$</span><span class="fu">closeConnection</span><span class="op">(</span><span class="op">)</span></span></code></pre></div><p></p></div>
</div>


</div><p></p><hr><a id="method-PooledConnectionHandler-queryDb"></a><div class="section">
<h3 id="method-querydb-">Method <code>queryDb()</code><a class="anchor" aria-label="anchor" href="#method-querydb-"></a></h3>
<p>query database and return the resulting data.frame</p>
<p>If environment variable LIMIT_ROW_