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[jira] [Created] (CALCITE-2567) RexSimplify#simplifyIsNull does not work for "is null(null)"


pengzhiwei created CALCITE-2567:
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             Summary: RexSimplify#simplifyIsNull does not work for "is null(null)"
                 Key: CALCITE-2567
                 URL: https://issues.apache.org/jira/browse/CALCITE-2567
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.17.0
            Reporter: pengzhiwei
            Assignee: Julian Hyde


The "is null(null)" should simplify to "true",but RexSimplify#simplifyIsNull does not work for it.



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