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https://issues.apache.org/jira/browse/ARROW-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pindikura Ravindra resolved ARROW-6134.
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Resolution: Fixed
Fix Version/s: 0.15.0
Issue resolved by pull request 5008
[https://github.com/apache/arrow/pull/5008]
> [C++][Gandiva] Add concat function in Gandiva
> ---------------------------------------------
>
> Key: ARROW-6134
> URL: https://issues.apache.org/jira/browse/ARROW-6134
> Project: Apache Arrow
> Issue Type: Task
> Components: C++ - Gandiva
> Reporter: Prudhvi Porandla
> Assignee: Prudhvi Porandla
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.15.0
>
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> * remove concat alias for concatOperator
> * add concat(utf8, utf8) function. The difference between concat and
> concatOperator is in null input handling. concatOperator returns null if one
> of the inputs is null; concat treats null input as empty string
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