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Posted to issues@calcite.apache.org by "duan xiong (Jira)" <ji...@apache.org> on 2021/09/21 01:24:00 UTC

[jira] [Commented] (CALCITE-4757) In Avatica, support columns of type "NULL" in query results

    [ https://issues.apache.org/jira/browse/CALCITE-4757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17417883#comment-17417883 ] 

duan xiong commented on CALCITE-4757:
-------------------------------------

[~julianhyde] Hi. If you have free time, please review this. Thanks. 

> In Avatica, support columns of type "NULL" in query results
> -----------------------------------------------------------
>
>                 Key: CALCITE-4757
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4757
>             Project: Calcite
>          Issue Type: Bug
>          Components: avatica
>    Affects Versions: avatica-1.18.0
>            Reporter: duan xiong
>            Assignee: duan xiong
>            Priority: Major
>             Fix For: avatica-1.19.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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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