[
https://issues.apache.org/jira/browse/CALCITE-4633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17360218#comment-17360218
]
Julian Hyde commented on CALCITE-4633:
--------------------------------------
How many times do I need to say it?
You can't trim fields from a UNION (in general) without affecting the results.
All of our transformations - whether in RelFieldTrimmer or RelRules - must
preserve semantics.
> Enable RelFieldTrimmer to trim fields on a distinct UNION
> ---------------------------------------------------------
>
> Key: CALCITE-4633
> URL: https://issues.apache.org/jira/browse/CALCITE-4633
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.26.0
> Reporter: Sean Broeder
> Assignee: Sean Broeder
> Priority: Major
> Fix For: 1.28.0
>
>
> Should be able to push a project to trim fields on top of distinct union
> without changing results.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
