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https://issues.apache.org/jira/browse/TAJO-352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi updated TAJO-352:
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Attachment: TAJO-352_2.patch
I've attached the updated patch. This patch does as follows:
* Enabled SQLParser to recognize left/right function names.
* Renamed from_left/from_right to left/right
* Added null handling code to left and right functions
* Added more unit tests for null handling
> 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, TAJO-352_2.patch
>
>
> left('abcdef', 1) ===> a
> left('abcdef', 2) ===> ab
> right('abcdef', 1) ===> f
> right('abcdef', 2) ===> ef
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