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Posted to jira@arrow.apache.org by "Alessandro Molina (Jira)" <ji...@apache.org> on 2021/10/01 07:18:07 UTC
[jira] [Updated] (ARROW-13643) [C++][Compute] Implement outer join
with support for residual predicates
[ https://issues.apache.org/jira/browse/ARROW-13643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alessandro Molina updated ARROW-13643:
--------------------------------------
Fix Version/s: (was: 6.0.0)
7.0.0
> [C++][Compute] Implement outer join with support for residual predicates
> ------------------------------------------------------------------------
>
> Key: ARROW-13643
> URL: https://issues.apache.org/jira/browse/ARROW-13643
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 6.0.0
> Reporter: Michal Nowakiewicz
> Assignee: Michal Nowakiewicz
> Priority: Minor
> Labels: query-engine
> Fix For: 7.0.0
>
>
> Residual predicates are evaluated after finding matches using equality condition on key columns, but before deciding whether an input had a match for the join and resolving outer references. They allow to implement in a simple (but potentially inefficient) way inequality predicates that accompany equality predicates in join condition.
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