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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4793) Assert failure when concatenating strings with total size greater than 32K
Date Wed, 16 Feb 2011 01:35:58 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dag H. Wanvik updated DERBY-4793:
---------------------------------

               Urgency: Low
    Bug behavior facts: [Deviation from standard]
                Labels: derby_triage10_8  (was: )

Tentatively marking as "deviation from standard", I tend to agree with Knu't conclusion that
it should be disallowed if the concatenated string doesn't fit in a legal SQL type (VARCHAR).

> Assert failure when concatenating strings with total size greater than 32K
> --------------------------------------------------------------------------
>
>                 Key: DERBY-4793
>                 URL: https://issues.apache.org/jira/browse/DERBY-4793
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.6.1.0
>            Reporter: Knut Anders Hatlen
>              Labels: derby_triage10_8
>         Attachments: concat.sql
>
>
> When concatenating two strings whose total length exceeds the maximum length for a VARCHAR,
an assert is triggered in the debug jars:
> ij> values length('0123456789.....' || '0123456789.....');
> ERROR XJ001: Java exception: 'ASSERT FAILED The maximum length 35000 for the result type
VARCHAR can't be greater than it's maximum width of result's typeid32672: org.apache.derby.shared.common.sanity.AssertFailure'.
> With non-debug jars, the same query completes successfully:
> ij> values length('0123456789.....' || '0123456789.....');
> 1          
> -----------
> 35000      
> 1 row selected
> I think this query is supposed to fail, also with non-debug jars, but in any even it
shouldn't be raising assert failures.

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