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Date: Wed, 12 Mar 2008 12:00:48 -0700 (PDT)
From: "Kathey Marsden (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-3310) ASSERT in MergeSort.checkColumnTypes()
 disallow legal type conversions
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     [ https://issues.apache.org/jira/browse/DERBY-3310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kathey Marsden updated DERBY-3310:
----------------------------------

    Attachment: derby-3310_diff.txt

Attached is a revision of the try1 patch (derby-3310_diff.txt) that adds some comments to the changed method.  Since Army confirmed that this change the right thing to do, I would like to commit this patch to get rid of this regression for 10.4.  I welcome comments on the comments and the patch.

Ultimately with DERBY-3494 I would like to try to roll this method into NormalizeResultSetNode, but for this fix I think it best not to combine it with code reorg.


> ASSERT in MergeSort.checkColumnTypes() disallow legal type conversions
> ----------------------------------------------------------------------
>
>                 Key: DERBY-3310
>                 URL: https://issues.apache.org/jira/browse/DERBY-3310
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.4.0.0
>            Reporter: Dyre Tjeldvoll
>            Priority: Minor
>         Attachments: cast-repro.sql, d3310_writeup_1.html, derby-3310_diff.txt, derby-3310_remove_genNormalizeResultSetNode_diff.txt, derby-3310_try1_diff.txt, derby3310_rsn_cleanup_1.txt
>
>
> The following code 
> CREATE TABLE U (SNAME VARCHAR(32000), TNAME VARCHAR(32000), C1 BIGINT);
> -- This triggers an ASSERT (because 2 is INTEGER and not BIGINT)
> INSERT INTO U(SNAME, TNAME, C1) SELECT DISTINCT SCHEMANAME, TABLENAME, 2
>  FROM SYS.SYSTABLES T JOIN SYS.SYSSCHEMAS S ON T.SCHEMAID = S.SCHEMAID;
> gives
> ERROR XJ001: Java exception: 'ASSERT FAILED col1.getClass() (class org.apache.derby.iapi.types.SQLInteger) expected to be the same as col2.getClass() (class org.apache.derby.iapi.types.SQLLongint): org.apache.derby.shared.common.sanity.AssertFailure'.

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