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https://issues.apache.org/jira/browse/CALCITE-3111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16862317#comment-16862317
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Laurent Goujon commented on CALCITE-3111:
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Working in the same team as [~Juhwan], yes, it is primarily to allow different
types of logical nodes. That said, I believe it is up to anybody to decide when
they want to use RelDecorrelator.
> Allow custom implementations of Correlate in RelDecorrelator
> ------------------------------------------------------------
>
> Key: CALCITE-3111
> URL: https://issues.apache.org/jira/browse/CALCITE-3111
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Juhwan Kim
> Assignee: Juhwan Kim
> Priority: Minor
>
> Currently, RelDecorrelator code only works for LogicalCorrelate.
> Decorrelating through Calcite would become much more flexible if it allows
> using custom implementations of Correlate. This would require refactoring all
> logical rels used in RelDecorrelator to the abstract ones(e.g
> LogicalCorrelate -> Correlate).
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