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https://issues.apache.org/jira/browse/CALCITE-2963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806009#comment-16806009
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Will Yu commented on CALCITE-2963:
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This issue is surfaced by the fix for CALCITE-2900
> RelStructuredTypeFlattener crashes when accessing nested field in STRUCTURED
> SqlType
> ------------------------------------------------------------------------------------
>
> Key: CALCITE-2963
> URL: https://issues.apache.org/jira/browse/CALCITE-2963
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.19.0
> Reporter: Will Yu
> Assignee: Will Yu
> Priority: Major
>
> When accessing nested field in a STRUCTURED SqlType, sometimes
> RelStructuredTypeFlattener will crash with java.lang.IndexOutOfBoundsException
> The test case is in SqlToRelConverterTest.java
> @Test
> public void testNestedColumnCrash() {
> final String sql =
> "select mailing_address.zip from sales.emp_address where home_address.city =
> 'abc'";
> sql(sql).ok();
> }
>
> The root cause is that when generate new RelNode for old RelNode, we did not
> consider whether the flattened field list needs null indicator.
>
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