<style>
/* Changing the layout to use less space for mobiles */
@media screen and (max-device-width: 480px), screen and (-webkit-min-device-pixel-ratio: 2) {
    #email-body { min-width: 30em !important; }
    #email-page { padding: 8px !important; }
    #email-banner { padding: 8px 8px 0 8px !important; }
    #email-avatar { margin: 1px 8px 8px 0 !important; padding: 0 !important; }
    #email-fields { padding: 0 8px 8px 8px !important; }
    #email-gutter { width: 0 !important; }
}
</style>
<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
    <tr valign="top">
        <td id="email-page" style="padding:16px !important;">
            <table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
                <tr valign="top">
                    <td bgcolor="#3e4c4e" style="background-color:#3e4c4e;color:#ffffff;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="https://www.jboss.org/dms/hibernate/images/jira/jiraheader_hibernate.png" alt="" style="vertical-align:top;" /></td>
                </tr><tr valign="top">
    <td id="email-banner" style="padding:32px 32px 0 32px;">

                
        
        
            <table align="left" border="0" cellpadding="0" cellspacing="0" width="100%" style="width:100%;">
    <tr valign="top">
        <td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;padding:0;">
                            &nbsp;                         <div id="email-action" style="padding: 0 0 8px 0;font-size:12px;line-height:18px;">
                                    <a class="user-hover" rel="tterrace" id="email_tterrace" href="https://hibernate.onjira.com/secure/ViewProfile.jspa?name=tterrace" style="color:#6c797f;">Tom Terrace</a>
     edited a comment on <img src="https://hibernate.onjira.com/images/icons/bug.gif" height="16" width="16" border="0" align="absmiddle" alt="Bug"> <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-951'>HHH-951</a>
            </div>
                        <div id="email-summary" style="font-size:16px;line-height:20px;padding:2px 0 16px 0;">
                <a style='color:#6c797f;text-decoration:none;' href='https://hibernate.onjira.com/browse/HHH-951'><strong>setMaxResults causes &quot;ORA-00918: column ambiguously defined&quot; exception </strong></a>
            </div>
                    </td>
    </tr>
</table>
        
    </td>
</tr>
<tr valign="top">
    <td id="email-fields" style="padding:0 32px 32px 32px;">
        <table border="0" cellpadding="0" cellspacing="0" style="padding:0;text-align:left;width:100%;" width="100%">
            <tr valign="top">
                <td id="email-gutter" style="width:64px;white-space:nowrap;"></td>
                <td>
                    <table border="0" cellpadding="0" cellspacing="0" width="100%">
                        <tr valign="top">
    <td colspan="2" style="color:#000000;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;padding:0 0 16px 0;width:100%;">
        <div class="comment-block" style="background-color:#edf5ff;border:1px solid #dddddd;color:#000000;padding:12px;"><p>I'm not sure if this is the exact same thing but I'm running into the ambiguous column problem with oracle as well. In my case I've reduced it down to a simple class with two many-to-many sets triggering the issue (testcase attached as hibernate_ora_bug.tar.gz).</p>

<p>I spent some time stepping through the selectString method in org.hibernate.loader.JoinWalker and it looks like the duplicate identifier column aliases are being generated when an inner join is followed by an outer join.  I'll look into a bit more tomorrow but I hope someone can confirm my testcase in the meantime.</p>

<p>Environment: <br/>
latest hibernate-core-4.2.0-SNAPSHOT.jar (d41545e13b3abe7b)<br/>
Oracle XE 11g 32 bit (on 64 bit windows)<br/>
tomcat 7</p></div>
        <div style="color:#505050;padding:4px 0 0 0;">                </div>
    </td>
</tr>
                    </table>
                </td>
            </tr>
        </table>
    </td>
</tr>













            </table>
        </td><!-- End #email-page -->
    </tr>
    <tr valign="top">
        <td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
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        </td>
    </tr>
</table><!-- End #email-wrap -->
</div><!-- End #email-body -->