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https://issues.apache.org/jira/browse/HIVE-3534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665247#comment-13665247
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Edward Capriolo commented on HIVE-3534:
---------------------------------------

I did consider that. I have never actually added anything to hive grammar also 
not skilled on developing query parsers/planners. I would like to add this UDF 
and possibly do what you are suggesting as a follow up, but I could use someone 
to guide me through it.
                
> Add left Lateral view syntax
> ----------------------------
>
>                 Key: HIVE-3534
>                 URL: https://issues.apache.org/jira/browse/HIVE-3534
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Edward Capriolo
>            Assignee: Edward Capriolo
>         Attachments: hive-3534.diff.txt
>
>
> A lateral view is like a join and if the function in question (like 
> explode()) produces zero rows then you lose the row
> whereas conceivably you could keep the row and just fill all entry with nulls.

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