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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15792) Hive should raise SemanticException when LPAD/RPAD pad character's length is 0
Date Wed, 08 Feb 2017 16:55:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858225#comment-15858225
] 

Thejas M Nair commented on HIVE-15792:
--------------------------------------

[~nandakumar131] can you also update the description (the extended part) of these functions
(the @Description tag) to talk about the behavior on getting empty pad string ?


> Hive should raise SemanticException when LPAD/RPAD pad character's length is 0
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-15792
>                 URL: https://issues.apache.org/jira/browse/HIVE-15792
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Zoltan Chovan
>            Assignee: Nandakumar
>            Priority: Minor
>         Attachments: HIVE-15792.000.patch
>
>
> For example SELECT LPAD('A', 2, ''); will cause an infinite loop and the running query
will hang without any error.
> It would be great if this could be prevented by checking the pad character's length and
if it's 0 then throw a SemanticException.



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