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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://hibernate.atlassian.net/browse/HHH" style="color: #3b73af; text-decoration: none">Hibernate ORM</a> / <a href="https://hibernate.atlassian.net/browse/HHH-9395" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-static-bug-b3a050a9-4377-43f4-aa84-a38007f6d746" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /></a> <a href="https://hibernate.atlassian.net/browse/HHH-9395" style="color: #3b73af; text-decoration: none">HHH-9395</a>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://hibernate.atlassian.net/browse/HHH-9395" style="color: #3b73af; text-decoration: none">"left outer join" with "on ... and null=null"</a> </span>
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Issue Type:
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-bug-b3a050a9-4377-43f4-aa84-a38007f6d746" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom" /> Bug
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Affects Versions:
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4.3.6
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Assignee:
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Unassigned
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Components:
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query-sql
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Created:
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12/Sep/2014 04:02 AM
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Environment:
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ubuntu 14.04 postgreSQL 9.3.5
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Labels:
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jpa21 hibernate postgresql join jpql
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="jmvivo" id="email_jmvivo" href="https://hibernate.atlassian.net/secure/ViewProfile.jspa?name=jmvivo" style="color:#6c797f;; color: #3b73af; text-decoration: none">Jose Manuel Vivó Arnal</a>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I execute current this JPQL query</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span> distinct entity
<span class="code-keyword" style="color: #000091">from</span> Incidence entity
left join treat(entity.road as Road) as road
<span class="code-keyword" style="color: #000091">where</span> entity.road is not null and lower(road.nomenclature) like ?1
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">looking on log file, this generate this query for PostgreSQL:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre class="code-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span>
distinct
....
....
<span class="code-keyword" style="color: #000091">from</span> public.incidence incidence0_
left outer join public.road road1_
on incidence0_.road=road1_.id and null=null
<span class="code-keyword" style="color: #000091">where</span> (incidence0_.road is not null) and (lower(road1_.nomenclature) like ? )
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Using '%CV%' as parameter, this query should return 175 rows, but I get none.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If I run the query commenting the " and null=null" on PostgreSQL I get the expected result:</p>
<div class="code panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
<div class="codeContent panelContent" style="padding: 9px 12px">
<pre class="code-sql" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">select</span>
distinct
....
....
<span class="code-keyword" style="color: #000091">from</span> public.incidence incidence0_
left outer join public.road road1_
on incidence0_.road=road1_.id /* and null=null */
<span class="code-keyword" style="color: #000091">where</span> (incidence0_.road is not null) and
(lower(road1_.nomenclature) like '%CV%' )
</pre>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">So... Why hibernate adds the "null=null" condition to left join?</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">I've tried it with Oracle and I got the very same result.</p>
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