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Posted to issues@calcite.apache.org by "Vladimir Sitnikov (JIRA)" <ji...@apache.org> on 2019/01/09 05:55:00 UTC

[jira] [Updated] (CALCITE-2344) Avoid inferring $0=null predicate from $0 IS NULL when… … $0 is not nullable

     [ https://issues.apache.org/jira/browse/CALCITE-2344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Sitnikov updated CALCITE-2344:
---------------------------------------
    Summary: Avoid inferring $0=null predicate from $0 IS NULL when… … $0 is not nullable  (was: Wrong constant reduction over windows function)

> Avoid inferring $0=null predicate from $0 IS NULL when… … $0 is not nullable
> ----------------------------------------------------------------------------
>
>                 Key: CALCITE-2344
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2344
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Laurent Goujon
>            Assignee: Laurent Goujon
>            Priority: Major
>
> {{RexUtil}} might incorrectly infer a IS NULL predicate would cause a reference over a window function to return null, but a window function type is never nullable.



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