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https://issues.apache.org/jira/browse/CALCITE-3165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876380#comment-16876380
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Haisheng Yuan commented on CALCITE-3165:
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Yup, a test case might be helpful.
> Project#accept(RexShuttle shuttle) does not update rowType
> ----------------------------------------------------------
>
> Key: CALCITE-3165
> URL: https://issues.apache.org/jira/browse/CALCITE-3165
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Ruben Quesada Lopez
> Assignee: Ruben Quesada Lopez
> Priority: Minor
>
> {{Project#accept(RexShuttle shuttle)}} can return a copy of the original
> Project, if the list of expressions is modified by the shuttle. However, this
> Project copy will maintain the original rowType, which might be wrong because
> this type is based on the expressions list (which was modified by the shuttle)
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