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https://issues.apache.org/jira/browse/CALCITE-7670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7670:
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Labels: pull-request-available (was: )
> Uncollect should support LEFT JOIN UNNEST
> -----------------------------------------
>
> Key: CALCITE-7670
> URL: https://issues.apache.org/jira/browse/CALCITE-7670
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.42.0
> Reporter: Mihai Budiu
> Assignee: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
>
> The semantics of LEFT JOIN UNNEST is different than the semantics of CROSS
> JOIN UNNEST: for an empty or NULL collection on the right hand side the
> former generates a NULL, while the latter generates nothing. The Uncollect
> operator and its runtime implementation should support both semantics.
> This was originally part of CALCITE-7608
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