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https://issues.apache.org/jira/browse/ARROW-14290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17427887#comment-17427887
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David Li commented on ARROW-14290:
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Agreed, I'm not sure it's worth trying to allow custom comparison/key functions
(I suspect even if we did, internally, we'd just compute a key column anyways).
Could you provide perhaps an example of the use case? Unicode seems like it
would cover multiple languages, unless you mean supporting non-Unicode
encodings (e.g. Shift-JIS or Big5 or something).
> [C++] String comparison in between ternary kernel
> -------------------------------------------------
>
> Key: ARROW-14290
> URL: https://issues.apache.org/jira/browse/ARROW-14290
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Benson Muite
> Assignee: Benson Muite
> Priority: Minor
>
> String comparisons in C++ will use order by unicode. This may not be suitable
> in many language applications, for example when using characters from
> languages that use more than ASCII. Sorting algorithms can often allow for
> the use of custom comparison functions. It would be helpful to allow for
> this for the between kernel as well. Initial work on the between kernel is
> being tracked in https://issues.apache.org/jira/browse/ARROW-9843
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