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https://issues.apache.org/jira/browse/DERBY-6567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen resolved DERBY-6567.
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Resolution: Fixed
Fix Version/s: 10.11.0.0
Issue & fix info: Repro attached (was: Patch Available,Repro attached)
> Incorrect nullability for CASE expression with parameter
> --------------------------------------------------------
>
> Key: DERBY-6567
> URL: https://issues.apache.org/jira/browse/DERBY-6567
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.10.2.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Fix For: 10.11.0.0
>
> Attachments: d6567-1a.diff
>
>
> This JUnit test code fails because it detects that the query returns null
> even though the result column is reported as not nullable:
> {code}
> PreparedStatement ps = prepareStatement(
> "values case when false then 1 else ? end");
> ps.setNull(1, Types.INTEGER);
> JDBC.assertSingleValueResultSet(ps.executeQuery(), null);
> {code}
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