[
https://issues.apache.org/jira/browse/ARROW-12710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17342434#comment-17342434
]
Joris Van den Bossche commented on ARROW-12710:
-----------------------------------------------
Is this already covered by ARROW-10959? (or I don't fully understand the
difference)
In Python, you can do a simple concatenation of an array of strings with the
{{sum()} function, or using {{str.join}} for using a separator:
{code}
>>> ",".join(['a', 'b', 'c'])
'a,b,c'
{code}
> [C++] String concatenate aggregate kernel
> -----------------------------------------
>
> Key: ARROW-12710
> URL: https://issues.apache.org/jira/browse/ARROW-12710
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Ian Cook
> Priority: Major
>
> Like MySQL/Impala {{group_concat}} and PostgreSQL {{string_agg}}. Takes a
> string array and a separator (possibly optional?) and returns one scalar
> string (one per group in the case of group aggregation) representing all the
> string values in the array concatenated together, with the separator added
> between each pair of concatenated values.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
