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https://issues.apache.org/jira/browse/DERBY-4388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762441#action_12762441
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Dag H. Wanvik commented on DERBY-4388:
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Thanks for this patch, Knut. I read the logic of
InListOperatorNode.eliminateNots and that lead me to believe that only the
*second* clone is necessary (the point being that the two "new" comparison
operations not share the same column reference. I tried this
by substituting leftOperand for leftClone in the first comparison (leftO <
rightOList.elementAt(0)), the test ran ok.
but it may be safer to clone both. Just thought I should mention it.
Without the patch, the test fails, withit it works, so an good improvement, I
think.
+1
> NullPointerException in RIGHT JOIN with NOT BETWEEN
> ---------------------------------------------------
>
> Key: DERBY-4388
> URL: https://issues.apache.org/jira/browse/DERBY-4388
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.0.2.1, 10.1.3.1, 10.2.2.0, 10.3.3.0, 10.4.2.0,
> 10.5.3.0, 10.6.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Attachments: d4388-1a.diff, d4388-1a.stat
>
>
> ij> create table t1(x int);
> 0 rows inserted/updated/deleted
> ij> create table t2(x int);
> 0 rows inserted/updated/deleted
> ij> insert into t2 values (1);
> 1 row inserted/updated/deleted
> ij> select * from t1 right join t2 on t1.x = t2.x where t1.x not between 0
> and 4;
> X |X
> -----------------------
> ERROR 38000: The exception 'java.lang.NullPointerException' was thrown while
> evaluating an expression.
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
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