[jira] [Comment Edited] (ARROW-12709) [C++] Add variadic string join kernel

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-12709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17342441#comment-17342441 ] 

Joris Van den Bossche edited comment on ARROW-12709 at 5/11/21, 2:58 PM:
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From the point of view of the kernel, what's the exact difference with ARROW-12710 and ARROW-10959 ? (in all cases I expect a signature of "list<string>, sep (optional) -> string" ?)


was (Author: jorisvandenbossche):
From the point of view of the kernel, what's the exact difference with ARROW-12710 and ARROW-10959 ? (I all cases I expect a signature of "list<string>, sep (optional) -> string" ?)

> [C++] Add variadic string join kernel
> -------------------------------------
>
>                 Key: ARROW-12709
>                 URL: https://issues.apache.org/jira/browse/ARROW-12709
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Ian Cook
>            Priority: Major
>
> Similar to SQL's {{concat}} and {{concat_ws}}. Should take 0, 1, 2, ... string arrays and an optional separator (default empty string) and concatenate them together, returning a string array. Should also accept scalar strings and recycle their values.



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