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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2526) Wrong results with queries that use the JOIN ... ON syntax to join with views or other non-base table expressions.
Date Wed, 17 Sep 2008 22:23:44 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kathey Marsden updated DERBY-2526:
----------------------------------

    Attachment: TestDerby.java

A user hit this bug in 10.1 but the symptom was different. Instead of wrong results, they
got a message: The repro is attached as TestDerby.java
Exception in thread "main" ERROR 42818: Comparisons between 
'CHAR () FOR BIT DATA' and 'CHAR' are not supported.
        at 
org.apache.derby.iapi.error.StandardException.newException(Unkno
wn Source)
        at 
org.apache.derby.impl.sql.compile.BinaryComparisonOperatorNode.b
indComparisonOperator
(Unknown Source)
        at 
org.apache.derby.impl.sql.compile.PredicateList.searchClauseTran
sitiveClosure(Unknown
 Source)
        at 
org.apache.derby.impl.sql.compile.SelectNode.performTransitiveCl
osure(Unknown Source)

        at 
org.apache.derby.impl.sql.compile.SelectNode.preprocess(Unknown 
Source)
        at 
org.apache.derby.impl.sql.compile.DMLStatementNode.optimize(Unkn
own Source)
        at 
org.apache.derby.impl.sql.compile.CursorNode.optimize(Unknown 
Source)
        at 
org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown 
Source)
        at 
org.apache.derby.impl.sql.GenericStatement.prepare(Unknown 
Source)
        at 
org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.
prepareInternalStatem
ent(Unknown Source)
        at 
org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown 
Source)
        at 
org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(Unknown 
Source)

I'll look into backporting this fix to 10.2 and 10.1


> Wrong results with queries that use the JOIN ... ON syntax to join with views or other
non-base table expressions.
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2526
>                 URL: https://issues.apache.org/jira/browse/DERBY-2526
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.0.2.1, 10.1.3.1, 10.2.2.0, 10.3.1.4
>            Reporter: Bryan Pendleton
>            Assignee: A B
>             Fix For: 10.3.1.4
>
>         Attachments: badQuery.log, d2526_v1.html, d2526_v1.patch, d2526_v2.patch, d2526_v2.stat,
derby-2526.sql, DistinctTestNotes.txt, firstTryPatch.diff, goodQuery.log, releaseNote.html,
releaseNote.html, TestDerby.java
>
>
> I think both select statements in the attached repro script should return 1 row, but
in fact the first statement returns 1 row and the second returns zero rows.
> The only difference between the two statements is that the columns in the UNION view
are listed in a different order (bvw vs. bvw2).
> This seems like a bug to me; the order of the columns in the view definition shouldn't
matter, should it? 
> As Army noted on the derby-dev list, the fact that this reproduces with 10.0 means that
it is not caused by some of the 10.2 optimizer changes. Something else is going wrong.

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