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https://issues.apache.org/jira/browse/CALCITE-4757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17406180#comment-17406180
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duan xiong commented on CALCITE-4757:
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The [CALCITE-4757|http://https//github.com/apache/calcite-avatica/pull/152]
welcome review. Thanks.
> When select constant value NULL, Calcite throws unknown type 0
> --------------------------------------------------------------
>
> Key: CALCITE-4757
> URL: https://issues.apache.org/jira/browse/CALCITE-4757
> Project: Calcite
> Issue Type: Bug
> Components: avatica
> Affects Versions: 1.27.0
> Reporter: duan xiong
> Priority: Major
>
> When I run:
> {code:java}
> select * from (values(null,true))
> {code}
> Caused by: java.lang.RuntimeException: unknown type 0.
> Looks like AvaticaSite can't handle Types.NULL.
>
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