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https://issues.apache.org/jira/browse/CALCITE-5137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Sysolyatin updated CALCITE-5137:
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Component/s: (was: linq4j)
> EnumerableUncollect throws NPE if input has ((List) null)
> ---------------------------------------------------------
>
> Key: CALCITE-5137
> URL: https://issues.apache.org/jira/browse/CALCITE-5137
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Dmitry Sysolyatin
> Assignee: Dmitry Sysolyatin
> Priority: Major
> Labels: pull-request-available
>
> EnumerableUncollect throws NPE when an input has element = ((List) null)
> Example:
> {code}
> SELECT * FROM UNNEST(CAST(null AS INTEGER ARRAY))
> {code}
> In a real situation, it can appear if to use left join. For example:
> {code}
> SELECT ARRAY(SELECT * FROM UNNEST(t.x)) FROM (VALUES(1)) LEFT JOIN (SELECT
> ARRAY[1] as x, 2 as y) t ON t.y = 1
> {code}
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