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https://issues.apache.org/jira/browse/TRAFODION-2515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hans Zeller reassigned TRAFODION-2515:
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Assignee: Hans Zeller
> Question mark is used instead of Unicode replacement character
> --------------------------------------------------------------
>
> Key: TRAFODION-2515
> URL: https://issues.apache.org/jira/browse/TRAFODION-2515
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-general
> Affects Versions: 2.0-incubating
> Reporter: Hans Zeller
> Assignee: Hans Zeller
> Priority: Minor
>
> When we convert text to a character set and encounter an invalid character,
> we should translate it into the "replacement character" of that character
> set. For ASCII and ISO-8859-1, we just use a question mark, since there is
> not special replacement character. When we convert to Unicode, however, we
> should use U+FFFD as the replacement character (often displayed as a black
> diamond with a question mark inside).
> Test case:
> cqd TRANSLATE_ERROR 'off';
> select converttohex(TRANSLATE(_ucs2 X'D8340041' using UCS2toUTF8)) from
> (values(0))x;
> The source value is an invalid bit pattern followed by "A" (0041). Right now
> the result shows 3F41 as the output, as Unicode or ASCII text this is "?A".
> With the correct replacement character, the result should be EFBFBD41, with
> EFBFBD being the UTF-8 encoding of U+FFFD.
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