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https://issues.apache.org/jira/browse/PIG-2929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheolsoo Park updated PIG-2929:
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Status: Patch Available (was: Open)
> CONCAT returns null when 1 items is null
> ----------------------------------------
>
> Key: PIG-2929
> URL: https://issues.apache.org/jira/browse/PIG-2929
> Project: Pig
> Issue Type: Bug
> Components: documentation, internal-udfs
> Affects Versions: 0.9.2, 0.9.1, 0.9.0
> Reporter: Nicholas Verbeck
> Assignee: Cheolsoo Park
> Fix For: 0.11
>
> Attachments: PIG-2929-2.patch, PIG-2929.patch
>
>
> Just stumbled upon this issue over the weekend. It appears the built-in
> CONCAT function will return null in the advent of 1 item in the Tuple being
> null. If this is as intended it would be nice if the docs made note of this.
> Otherwise it would be nice if nulls where just skipped and a proper string of
> what was left was returned. If all items are null then just return null in
> that case.
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