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Posted to issues@calcite.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/04/12 16:35:00 UTC

[jira] [Updated] (CALCITE-3889) Add apply(Mappings.Mapping) to RelTrait and RelTraitSet

     [ https://issues.apache.org/jira/browse/CALCITE-3889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-3889:
------------------------------------
    Labels: pull-request-available  (was: )

> Add apply(Mappings.Mapping) to RelTrait and RelTraitSet
> -------------------------------------------------------
>
>                 Key: CALCITE-3889
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3889
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Haisheng Yuan
>            Priority: Major
>              Labels: pull-request-available
>
> RelTrait Collation, Distribution have key indices, when we pass down the traitset to child or propagate to parent operator, we have to remap these keys. It would be nice to have {{apply(Mappings.Mapping)}} on RelTrait and RelTraitSet. RelDistribution already has the method, but we may want it on every RelTrait except Convention. 



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