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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3310) ASSERT in MergeSort.checkColumnTypes() disallow legal type conversions
Date Fri, 29 Feb 2008 16:18:51 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573813#action_12573813
] 

Kathey Marsden commented on DERBY-3310:
---------------------------------------

I think then I misinterpreted your suggestion:
>Setting up a NormalizeResultSetNode is spread over three locations, the class itself (very
little, it's almost acting like a C struct),
>the genNormalizeResultSetNode method and then copyLengthsAndTypesToSource. A good O-O
implementation would have
>the logic to create a NormalizeResultSetNode self-contained in NormalizeResultSetNode.

I was endeavoring to move the existing logic into NormalizeResultSetNode.  Perhaps some 
other first steps are more appropriate.  Any advice is appreciated.  I do feel however that
I am getting further away, not closer to resolving DERBY-3310.


> 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
>            Assignee: Kathey Marsden
>            Priority: Minor
>         Attachments: cast-repro.sql, 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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