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https://issues.apache.org/jira/browse/CALCITE-129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16725176#comment-16725176
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Stamatis Zampetakis commented on CALCITE-129:
---------------------------------------------

Various Implementation choices regarding this subject were discussed in the dev 
list (see thread with title [Recursive query, graph query, 
Datalog|http://mail-archives.apache.org/mod_mbox/calcite-dev/201712.mbox/%3CCAPSgeESFyih9_hf9=uMWFN00BCR7sjf0T+FRY2=ary3ygm1...@mail.gmail.com%3E]).

> Support recursive WITH queries
> ------------------------------
>
>                 Key: CALCITE-129
>                 URL: https://issues.apache.org/jira/browse/CALCITE-129
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: GitHub Import
>            Priority: Major
>              Labels: github-import
>
> Building on https://github.com/julianhyde/optiq/issues/128, enable the 
> RECURSIVE keyword.
> This feature allows relations to be computed iteratively. Whereas 
> ([#128|https://github.com/JulianHyde/optiq/issues/128] | 
> [FLINK-128|https://issues.apache.org/jira/browse/OPTIQ-128]) was mainly a 
> parser/validator change, this feature requires significant changes to the 
> planner and runtime.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/julianhyde/optiq/issues/129
> Created by: [julianhyde|https://github.com/julianhyde]
> Labels: enhancement, 
> Created at: Tue Feb 11 20:29:35 CET 2014
> State: open



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