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https://issues.apache.org/jira/browse/CALCITE-5949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17757390#comment-17757390
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Benchao Li commented on CALCITE-5949:
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I agree that this is a problem.
> RexExecutable correct handling of invalid constant expressions
> --------------------------------------------------------------
>
> Key: CALCITE-5949
> URL: https://issues.apache.org/jira/browse/CALCITE-5949
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.35.0
> Reporter: Claude Brisson
> Priority: Major
> Labels: pull-request-available
>
> While reducing, when encountering an invalid expression in the list of
> constant expressions, RexExecutor is meant to return all initial expressions
> unchanged.
> It fails to do so, because already handled correct expressions have already
> been added to the returned list, which can be greater than the input list.
> For instance, when given the list \{ LN(2), LN(-2) }, the RexExecutor will
> output a list of length 3.
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