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Date: Thu, 5 Nov 2009 08:15:32 +0000 (UTC)
From: "Knut Anders Hatlen (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4365) NullPointerException when preparing
 LEFT OUTER JOIN between VALUES statements
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    [ https://issues.apache.org/jira/browse/DERBY-4365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773825#action_12773825 ] 

Knut Anders Hatlen commented on DERBY-4365:
-------------------------------------------

That's my understanding too. It should be OK to specify NULL if it's wrapped in a CAST, though. So this query should still be accepted:

ij> select a.* from (values ('a'),('b'),(cast(null as char(1)))) a left outer join (values ('c'),('d')) b on 1=1;
1   
----
a   
a   
b   
b   
NULL
NULL

6 rows selected

> NullPointerException when preparing LEFT OUTER JOIN between VALUES statements
> -----------------------------------------------------------------------------
>
>                 Key: DERBY-4365
>                 URL: https://issues.apache.org/jira/browse/DERBY-4365
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.5.3.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Mamta A. Satoor
>
> ij version 10.5
> ij> connect 'jdbc:derby:db;create=true';
> ij> select a.* from (values ('a'),('b'),(null)) a
>     left outer join (values ('c'),('d')) b on 1=1;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.

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