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Posted to derby-dev@db.apache.org by "Mamta A. Satoor (JIRA)" <ji...@apache.org> on 2009/11/05 18:39:32 UTC
[jira] Updated: (DERBY-4365) NullPointerException when preparing
LEFT OUTER JOIN between VALUES statements
[ https://issues.apache.org/jira/browse/DERBY-4365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mamta A. Satoor updated DERBY-4365:
-----------------------------------
Attachment: DERBY4365_NULLinValues_stat_patch1.txt
DERBY4365_NULLinValues_diff_patch1.txt
I have a patch which I am ready to commit if noone has any objection to it. Basically, for some reason, for JOIN, we were doing a no-op in the method bindUntypedNullsToResultColumns(ResultColumnList) rather than checking for untyped nulls for the left and right resultsets. I have made changes so that check is made. I have added couple more tests (including the one provided by Knut, where a CAST of NULL values should work fine). I will plan on committing the patch tomorrow if there is no feedback. The derbyall and junit suites ran fine with the exception of known intermittent (DERBY-3757) 'ASSERT FAILED transaction table has null entry when running new StressMultiTest
> 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
> Attachments: DERBY4365_NULLinValues_diff_patch1.txt, DERBY4365_NULLinValues_stat_patch1.txt
>
>
> 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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