are no results
 other than through INOUT and OUT parameters, if any.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if first result corresponds to result set</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../jakarta/persistence/QueryTimeoutException.html" title="class in jakarta.persistence">QueryTimeoutException</a></code> - if the query execution exceeds
         the query timeout value set and only the statement is
         rolled back</dd>
<dd><code>