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https://issues.apache.org/jira/browse/CALCITE-4913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17451926#comment-17451926
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Konstantin Orlov commented on CALCITE-4913:
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[~julianhyde], [~zabetak], I've prepared a PR. Could you please take a look?
> Correlated variables in a select list are not deduplicated
> ----------------------------------------------------------
>
> Key: CALCITE-4913
> URL: https://issues.apache.org/jira/browse/CALCITE-4913
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.28.0
> Reporter: Konstantin Orlov
> Priority: Major
>
> Currently, the deduplication of correlated variables ain't done for
> correlates in select list. Looks like the root cause here is same as for
> CALCITE-4673, but, unfortunately, suggested patch has addressed only the
> particular problem with a table function. It would be great to provide a more
> gereric fix.
> Besides, the project rel doesn't expose any correlated variables that should
> be set by this node
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