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https://issues.apache.org/jira/browse/CALCITE-1653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15878569#comment-15878569
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Jesus Camacho Rodriguez commented on CALCITE-1653:
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Simplifying cast on constant was a good idea, but to remain as extensible as we
were before, I think we should rely on the planner associated Executor if it is
available, instead of using default Calcite executor. [~julianhyde], what do
you think? This should be an easy fix or am I missing something?
> Allow for custom RelOptPlanner.Executor in RexUtil.simplify
> -----------------------------------------------------------
>
> Key: CALCITE-1653
> URL: https://issues.apache.org/jira/browse/CALCITE-1653
> Project: Calcite
> Issue Type: Bug
> Reporter: Remus Rusanu
> Assignee: Julian Hyde
>
> {{RexUtil.simplify}} (and derivatives) use a default {{EXECUTOR}} for
> evaluating literals and expression in {{simplifyCast}}. This causes value
> differences from Hive, triggering issues like CALCITE-1650, CALCITE-1651.
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