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Posted to derby-dev@db.apache.org by "Kristian Waagan (JIRA)" <ji...@apache.org> on 2009/02/03 13:09:59 UTC

[jira] Updated: (DERBY-4040) SQLChar.getLength returns wrong length for some data values

     [ https://issues.apache.org/jira/browse/DERBY-4040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kristian Waagan updated DERBY-4040:
-----------------------------------

    Derby Info: [Patch Available, Regression]  (was: [Regression])

> SQLChar.getLength returns wrong length for some data values
> -----------------------------------------------------------
>
>                 Key: DERBY-4040
>                 URL: https://issues.apache.org/jira/browse/DERBY-4040
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.3.1, 10.4.2.0, 10.5.0.0
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>         Attachments: derby-4040-1a-SQLChar_length_and_test.diff, derby-4040-1a-SQLChar_length_and_test.stat
>
>
> SQLChar.getLength() returns the wrong length of the data value in some cases.
> For the bug to be triggered, the value must contain characters that are represented by two or three bytes, and Derby must store the value as a stream.
> In my ad-hoc testing, I found that a value of length 10886 with CJK characters doesn't trigger the bug, but 10887 does trigger the bug. Further, for a range of lengths the bug can also been observed for CLOB columns (when doing 'select length(clobcolumn)').

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