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https://issues.apache.org/jira/browse/CALCITE-1615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15876614#comment-15876614
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Haohui Mai commented on CALCITE-1615:
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[~julianhyde] would you mind taking a look? This implementation essentially
comes from https://github.com/julianhyde/calcite/commits/768-hop. This PR
contains the parts that are not in CALCITE-1603. Thanks.
> Support HOP and SESSION in the GROUP BY clause
> ----------------------------------------------
>
> Key: CALCITE-1615
> URL: https://issues.apache.org/jira/browse/CALCITE-1615
> Project: Calcite
> Issue Type: Improvement
> Reporter: Haohui Mai
> Assignee: Haohui Mai
>
> CALCITE-1603 has finished the heavy liftings of supporting the {{TUMBLE}}
> function in the {{GROUP BY}} clause. This jira proposes to add supports for
> the {{HOP}} and the {{SESSION}} functions in Calcite as well.
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