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https://issues.apache.org/jira/browse/ARROW-16550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17536291#comment-17536291
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Yaron Gvili commented on ARROW-16550:
-------------------------------------
See [this
post|https://github.com/substrait-io/substrait/issues/190#issuecomment-1125306949]
about the current Ibis/Substrait/Arrow treatment of casts.
> [C++] Add support for Substrait cast expression
> -----------------------------------------------
>
> Key: ARROW-16550
> URL: https://issues.apache.org/jira/browse/ARROW-16550
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Weston Pace
> Priority: Major
>
> It would seem that Substrait treats cast as a dedicated "expression kind" and
> not a scalar function call. We should add support for this expression kind.
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