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https://issues.apache.org/jira/browse/CALCITE-2969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16842244#comment-16842244
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Danny Chan commented on CALCITE-2969:
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Thanks [~julianhyde] and [~zabetak], i think it is okey to wait for all of us
to agree with the change, after all, it has some breaking changes. I would try
to make response for all of your nice comments.
I kind of want to keep the commits msgs now cause the PR lasts long time, and
the commit messages is a good recording of review history.
> Improve design of join-like relational expressions
> --------------------------------------------------
>
> Key: CALCITE-2969
> URL: https://issues.apache.org/jira/browse/CALCITE-2969
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.19.0
> Reporter: Stamatis Zampetakis
> Assignee: Danny Chan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 24h 10m
> Remaining Estimate: 0h
>
> The existing join-like (Join, SemiJoin, Correlate, etc.) logical and physical
> relational expressions have a few design issues which make some parts of the
> codebase complicated and difficult to understand.
> The goal of this ticket is to improve the design of the respective
> expressions based on the discussion in the dev list (see thread [Join,
> SemiJoin,
> Correlate|https://mail-archives.apache.org/mod_mbox/calcite-dev/201903.mbox/%3C8EEA04A0-4A77-4283-BD20-B019E19AE126%40apache.org%3E]).
>
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