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https://issues.apache.org/jira/browse/CALCITE-3542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16988612#comment-16988612
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Ruben Q L commented on CALCITE-3542:
------------------------------------
Done via
https://github.com/apache/calcite/commit/3559b3bc0491608d8c5ca9d55b57736df29ae369
> Implement RepeatUnion All=false
> -------------------------------
>
> Key: CALCITE-3542
> URL: https://issues.apache.org/jira/browse/CALCITE-3542
> Project: Calcite
> Issue Type: New Feature
> Affects Versions: 1.21.0
> Reporter: Ruben Q L
> Assignee: Ruben Q L
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.22.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> CALCITE-2812 introduced recursive queries in Calcite via the new operator
> RepeatUnion.
> However, this initial implementation was not complete, since it only provided
> RepeatUnion ALL (i.e. duplicates were returned).
> The current ticket aims to implement the missing feature: RepeatUnion
> non-ALL (i.e. duplicates must be discarded).
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