[jira] [Commented] (IOTDB-3818) Support nested expressions in GROUP BY LEVEL

["xiaozhihong (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IOTDB-3818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17620752#comment-17620752 ] 

xiaozhihong commented on IOTDB-3818:
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!image-2022-10-20-13-40-36-909.png!

> Support nested expressions in GROUP BY LEVEL
> --------------------------------------------
>
>                 Key: IOTDB-3818
>                 URL: https://issues.apache.org/jira/browse/IOTDB-3818
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: mpp-cluster
>    Affects Versions: 0.14.0-SNAPSHOT
>            Reporter: xiaozhihong
>            Assignee: Minghui Liu
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: image-2022-10-20-13-40-36-909.png
>
>
> Start 1 confignode and 1 DataNode.
> Nested expressions are not supported in group by level queries, and the returned status is incorrect.
> like this：
> {code:java}
> IoTDB> select avg(s1) + avg(s2) from root.sg.* group by level=1;
> Msg: 500: [INTERNAL_SERVER_ERROR(500)] Exception occurred: "select avg(s1) + avg(s2) from root.sg.* group by level=1". executeStatement failed. Index 0 out of bounds for length 0
> {code}



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