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Date: Thu, 19 Aug 2010 18:46:16 -0400 (EDT)
From: "Dag H. Wanvik (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-4736) ASSERT FAIL when code generating a
 column reference in a join predicate in presence of other outer join
 reordering
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     [ https://issues.apache.org/jira/browse/DERBY-4736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dag H. Wanvik updated DERBY-4736:
---------------------------------

    Attachment: derby-4736-1d.diff
                derby-4736-1d.stat

Uploading version 1d of this patch, which just improves legibility a bit in the new RuntimeStatisticsParser#assertSequence argument strings, by interpreting "_" as TAB and removing the explicit newline in favor if it being implicit.

I think this patch is pretty safe, so if there are no objections, I'll commit it tomorrow.


> ASSERT FAIL when code generating a column reference in a join predicate in presence of other outer join reordering
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4736
>                 URL: https://issues.apache.org/jira/browse/DERBY-4736
>             Project: Derby
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 10.7.0.0
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>         Attachments: derby-4736-1a.diff, derby-4736-1a.stat, derby-4736-1b.diff, derby-4736-1b.stat, derby-4736-1c.diff, derby-4736-1c.stat, derby-4736-1d.diff, derby-4736-1d.stat, loj-analysis.txt, query_plan_derby_4736.pdf
>
>
> From schema given in DERBY-4712, this query gives an ASSERT with sane Derby:
> rs = s.executeQuery("SELECT 1 FROM (T0 LEFT JOIN (T1 LEFT JOIN (T2 LEFT JOIN " +
>                                " (T3 LEFT JOIN T4 ON 1=1) ON T2.X = T3.X) ON 1=1) ON 1=1) " +
>                                " LEFT JOIN " +
>                                " (T5 INNER JOIN T6 ON 1=1) " +
>                                " ON T2.X = 1 ");
> Cf the attachments in DERBY-4712 assert-bind-opt-trees.*. 
> From preliminary analysis, this error seems to be unrelated to the NPEs reported in DERBY-4712, so filing this as a sub-issue.

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