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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4736) ASSERT FAIL when code generating a column reference in a join predicate in presence of other outer join reordering
Date Wed, 07 Jul 2010 17:02:51 GMT
ASSERT FAIL when code generating a column reference in a join predicate in presence of other
outer join reordering
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                 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


>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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