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https://issues.apache.org/jira/browse/DERBY-5954?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-5954:
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Issue & fix info: Patch Available,Repro attached (was: Repro attached)
Affects Version/s: (was: 10.10.0.0)
10.6.1.0
10.6.2.1
10.7.1.1
10.8.1.2
10.8.2.2
10.9.1.0
Assignee: Dag H. Wanvik
Bug behavior facts: Regression,Seen in production (was: Seen in production)
> NPE in SELECT involving subselects and windows functions
> --------------------------------------------------------
>
> Key: DERBY-5954
> URL: https://issues.apache.org/jira/browse/DERBY-5954
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.6.1.0, 10.6.2.1, 10.7.1.1, 10.8.1.2, 10.8.2.2,
> 10.9.1.0
> Reporter: Rick Hillegas
> Assignee: Dag H. Wanvik
> Attachments: derby-5954.diff
>
>
> A user reports and I have verified an NPE on the following SELECT:
> connect 'jdbc:derby:memory:db;create=true';
> create table blah ( a int );
> insert into blah values (1), (2), (3), (4), (5), (6), (7);
> SELECT rn, (SELECT rn FROM (SELECT row_number() over() rn FROM blah ) as T2
> where T2.rn = T1.rn+1) rn2
> FROM (SELECT row_number() over() rn from blah) as T1;
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