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Posted to issues@calcite.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/11/04 02:44:00 UTC

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

     [ https://issues.apache.org/jira/browse/CALCITE-4875?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-4875:
------------------------------------
    Labels: pull-request-available  (was: )

> 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
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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