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https://issues.apache.org/jira/browse/CALCITE-2578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16622550#comment-16622550
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Andrei Sereda commented on CALCITE-2578:
----------------------------------------
Fixed in
[0503ff65|https://git1-us-west.apache.org/repos/asf?p=calcite.git;a=commit;h=40503ff658b7a]
> Support ANY_VALUE Aggregate Function in ElasticSearch Adapter
> -------------------------------------------------------------
>
> Key: CALCITE-2578
> URL: https://issues.apache.org/jira/browse/CALCITE-2578
> Project: Calcite
> Issue Type: Improvement
> Components: elasticsearch-adapter
> Reporter: Andrei Sereda
> Assignee: Julian Hyde
> Priority: Major
>
> Sometimes it is useful to return a single value from a multi-set (bucket).
> {code:sql}
> SELECT foo, ANY_VALUE(bar) FROM elastic GROUP BY foo
> {code}
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