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https://issues.apache.org/jira/browse/CALCITE-3165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruben Quesada Lopez resolved CALCITE-3165.
------------------------------------------
    Resolution: Fixed

Fixed in 
https://github.com/apache/calcite/commit/e5e5809d28f422896147bd9f069f4930f22629ad

> 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
>    Affects Versions: 1.20.0
>            Reporter: Ruben Quesada Lopez
>            Assignee: Ruben Quesada Lopez
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.21.0
>
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> {{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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