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https://issues.apache.org/jira/browse/DRILL-6321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16458994#comment-16458994
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ASF GitHub Bot commented on DRILL-6321:
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Github user parthchandra commented on the issue:
https://github.com/apache/drill/pull/1224
@vvysotskyi The lateral join implementation committed in DRILL-6323
supports cross join for all conditions. The main difficulty in cross join is
the management of the memory needed to produce a cartesian product (M x N). In
cross apply though, the cross join is only computed on one row in the left side
at a time (1 x N), since the left and right sides are correlated. This allows
cross apply to operate with a very small amount of memory.
> Lateral Join: Planning changes - enable submitting physical plan
> ----------------------------------------------------------------
>
> Key: DRILL-6321
> URL: https://issues.apache.org/jira/browse/DRILL-6321
> Project: Apache Drill
> Issue Type: Task
> Reporter: Parth Chandra
> Assignee: Chunhui Shi
> Priority: Major
>
> Implement changes to enable submitting a physical plan containing lateral and
> unnest.
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