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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 Tue, 12 Feb 2008 17:47:09 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12568250#action_12568250
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Kathey Marsden commented on DERBY-3310:
---------------------------------------

I was referring to the template field in the MergeSort class.

If  "the template for the sort would have a SQLInteger," then I take it our pre DERBY-2775
behavior was 
correct that the template was a SQLInteger and not a SQLLongInt.

Is the change for VirtualColumnNode getting its type from its source node flawed in some way?
http://svn.apache.org/viewvc/db/derby/code/trunk/java/engine/org/apache/derby/impl/sql/compile/VirtualColumnNode.java?p2=%2Fdb%2Fderby%2Fcode%2Ftrunk%2Fjava%2Fengine%2Forg%2Fapache%2Fderby%2Fimpl%2Fsql%2Fcompile%2FVirtualColumnNode.java&p1=%2Fdb%2Fderby%2Fcode%2Ftrunk%2Fjava%2Fengine%2Forg%2Fapache%2Fderby%2Fimpl%2Fsql%2Fcompile%2FVirtualColumnNode.java&r1=554012&r2=554011&view=diff&pathrev=554012


> 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
>
>
> 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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