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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 Mon, 11 Feb 2008 19:13:08 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12567761#action_12567761
] 

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

So for our specific case we have
sort of (rows with value of type INTEGER) ==> insert into table with column of type BIGINT

So it makes sense to me that at the sort  phase, both the row and the "template" should be
INTEGER as was the case prior to the change for DERBY-2775. Now the template column type is
BIGINT and the row column type is INTEGER.  
Could you explain what the template is in this context and whether you think it should be
INTEGER or BIGINT at this point in the processing?




> 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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