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From "Edward Capriolo (JIRA)" <>
Subject [jira] [Commented] (HIVE-3534) Add left Lateral view syntax
Date Thu, 23 May 2013 15:05:21 GMT


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:
>             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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