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Posted to dev@calcite.apache.org by "Igor Lozynskyi (Jira)" <ji...@apache.org> on 2020/10/10 09:53:00 UTC

[jira] [Created] (CALCITE-4325) RexSimplify/Sarg incorrectly simplifies complex expressions with NULL

Igor Lozynskyi created CALCITE-4325:
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             Summary: RexSimplify/Sarg incorrectly simplifies complex expressions with NULL
                 Key: CALCITE-4325
                 URL: https://issues.apache.org/jira/browse/CALCITE-4325
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.26.0
         Environment: All environments
            Reporter: Igor Lozynskyi
         Attachments: rex-simplify-issue-tests.patch

In Calcite 1.26, the Rex expressions like follows:
 `(deptno = 20 OR deptno IS NULL) AND deptno = 10`
 Are simplified to:
 `deptno IS NULL`
 Instead of:
 `FALSE`

Similarly, the following expression:
 `(deptno <> 20 OR deptno IS NULL) AND deptno = 10`
 Is simplified to:
 `deptno = 10 OR deptno IS NULL`
 Instead of:
 `deptno = 10`

A diff with related unit tests (for RelBuilderTest.java) is in the attachment.



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