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Posted to issues@calcite.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2019/02/13 09:15:00 UTC

[jira] [Commented] (CALCITE-2840) Simplification should use more specific UnknownAs modes during simplification

    [ https://issues.apache.org/jira/browse/CALCITE-2840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16766959#comment-16766959 ] 

Zoltan Haindrich commented on CALCITE-2840:
-------------------------------------------

right now AND/OR simplification is quite defensive; they set UnknownAs.UNKNOWN during all operand simplification


> Simplification should use more specific UnknownAs modes during simplification
> -----------------------------------------------------------------------------
>
>                 Key: CALCITE-2840
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2840
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>
> Some parts of this was already working in 1.17 ; but 1.18 turned out to be a more conservative in this sense.



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