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https://issues.apache.org/jira/browse/DERBY-5236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13102105#comment-13102105
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Knut Anders Hatlen commented on DERBY-5236:
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It turns out I misunderstood the third parameter to
AppRequester.greaterThanOrEqualTo(). It's not the third digit of the version
number, it's actually the DRDA maintenance version Kathey mentioned. The
product id sent by the 10.8.1.2 client is DNC10080, and that won't change when
we bump the version number. So it looks like it's the DRDA maintenance version
and not the Derby version number we should bump when backporting.
> Client driver silently truncates strings that exceed 32KB
> ---------------------------------------------------------
>
> Key: DERBY-5236
> URL: https://issues.apache.org/jira/browse/DERBY-5236
> Project: Derby
> Issue Type: Bug
> Components: Network Client
> Affects Versions: 10.8.1.2
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Attachments: d5236-1a-client-fetch-complete.diff,
> d5236-2a-longer-strings.diff, d5236-3a-warning.diff,
> d5236-4a-client-compatibility.diff, d5236-4b.diff, repro.diff,
> write-full-string.diff
>
>
> Can be seen with this JUnit test case that retrieves a VARCHAR value with
> 20000 characters. With the client driver, the string is truncated to 10900
> characters (32700 bytes when encoded in UTF-8).
> public void testLongColumn() throws SQLException {
> PreparedStatement ps = prepareStatement(
> "values cast(? as varchar(20000))");
> char[] chars = new char[20000];
> Arrays.fill(chars, '\u4e10');
> String str = new String(chars);
> ps.setString(1, str);
> JDBC.assertSingleValueResultSet(ps.executeQuery(), str);
> }
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