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https://issues.apache.org/jira/browse/TAJO-352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13836232#comment-13836232
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Hyunsik Choi commented on TAJO-352:
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If the second parameter (i.e., size) is null, the result should be null. Others
look great for me.
> Implement right/left(text, size) function
> -----------------------------------------
>
> Key: TAJO-352
> URL: https://issues.apache.org/jira/browse/TAJO-352
> Project: Tajo
> Issue Type: Sub-task
> Components: operator/function/udf
> Reporter: DaeMyung Kang
> Assignee: DaeMyung Kang
> Priority: Minor
> Fix For: 0.8-incubating
>
> Attachments: TAJO-352.patch
>
>
> left('abcdef', 1) ===> a
> left('abcdef', 2) ===> ab
> right('abcdef', 1) ===> f
> right('abcdef', 2) ===> ef
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