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https://issues.apache.org/jira/browse/CALCITE-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-2888:
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Labels: pull-request-available (was: )
> Enhance RexImplicationChecker to better handle filters with CAST
> ----------------------------------------------------------------
>
> Key: CALCITE-2888
> URL: https://issues.apache.org/jira/browse/CALCITE-2888
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Juhwan Kim
> Assignee: Juhwan Kim
> Priority: Major
> Labels: pull-request-available
>
> I saw some cases where RexImplicationChecker gave an AssertionError when CAST
> was involved in the filters.
> For example, if a filter is
> '>(CAST(SOME_VHARCHAR_INPUT_REF, DATE), SOME_DATE_LITERAL)',
> currently, it removes CAST first and tries to convert DATE literal to VARCHAR
> type,
> which is not supported, and runtime AssertionError is thrown during
> implication checking.
> I think the issue can be solved by using RexExecutor's reduce function before
> removing cast from literal side. Also, allowing other implementations of
> RexExecutor would make it more flexible.
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