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https://issues.apache.org/jira/browse/IOTDB-3818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Minghui Liu reopened IOTDB-3818:
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> 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
>
> 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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