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https://issues.apache.org/jira/browse/PHOENIX-4644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388794#comment-16388794
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James Taylor commented on PHOENIX-4644:
---------------------------------------

Please review, [~tdsilva]. FYI, [~xjodoin] - you'll need this for PHOENIX-4643.

> Array modification functions should require two arguments
> ---------------------------------------------------------
>
>                 Key: PHOENIX-4644
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4644
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: James Taylor
>            Priority: Major
>             Fix For: 4.14.0
>
>         Attachments: PHOENIX-4644_v1.patch
>
>
> ARRAY_APPEND, ARRAY_PREPEND, and ARRAY_CAT should require two arguments. 
> Also, if the second argument is null, we need to make sure not to have the 
> entire expression return null (but instead it should return the first 
> argument). To accomplish this, we need to have a ParseNode that overrides the 
> method controlling this and ensure it's used for these functions.



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