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https://issues.apache.org/jira/browse/FLINK-38752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18042152#comment-18042152
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Sergey Nuyanzin commented on FLINK-38752:
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Merged as
[d0ab038ecbb2ebf64ba7f5e673a6c5bb8b8360fe|https://github.com/apache/flink/commit/d0ab038ecbb2ebf64ba7f5e673a6c5bb8b8360fe]
> Drop EquivalentExprShuttle
> --------------------------
>
> Key: FLINK-38752
> URL: https://issues.apache.org/jira/browse/FLINK-38752
> Project: Flink
> Issue Type: Technical Debt
> Components: Table SQL / Planner
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
> Labels: pull-request-available
>
> After upgrading Calcite to 1.36 there is no need for
> {{EquivalentExprShuttle}} since all these optimizations are included in
> Calcite
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