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Posted to issues@calcite.apache.org by "Stamatis Zampetakis (Jira)" <ji...@apache.org> on 2020/10/26 09:50:00 UTC

[jira] [Commented] (CALCITE-4356) Support recursive queries in SqlToRel and RelToSql converters

    [ https://issues.apache.org/jira/browse/CALCITE-4356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17220593#comment-17220593 ] 

Stamatis Zampetakis commented on CALCITE-4356:
----------------------------------------------

I suppose CALCITE-129 is the one to target first. If there is no AST (SqlNode) we cannot really go from sql to rel, or we can?

> Support recursive queries in SqlToRel and RelToSql converters
> -------------------------------------------------------------
>
>                 Key: CALCITE-4356
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4356
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Ruben Q L
>            Priority: Major
>
> Recursive queries were introduced via RepeatUnion operator (CALCITE-2812). However, for the moment they can only be generated using directly a RelBuilder. The purpose of this ticket it to support then on SQL by evolving SqlToRelConverter (and RelToSqlConverter).



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