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Posted to issues@calcite.apache.org by "Jay Narale (Jira)" <ji...@apache.org> on 2021/11/04 02:02:01 UTC

[jira] [Created] (CALCITE-4875) NVL Function Incorrectly changes nullability field of its operands

Jay Narale created CALCITE-4875:
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             Summary: NVL Function Incorrectly changes nullability field of its operands
                 Key: CALCITE-4875
                 URL: https://issues.apache.org/jira/browse/CALCITE-4875
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Jay Narale


We rewrite the NVL function in _org/apache/calcite/sql2rel/StandardConvertletTable.java:303_  , during the rewrite we currently override the operands' nullability to be NOT NULL which is not needed. This causes issues if that operand is pushdown , since the input of that operand need not be not nullable whereas we forced that operand to be Not nullable

 



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