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https://issues.apache.org/jira/browse/ARROW-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Li reassigned ARROW-13966:
--------------------------------
Assignee: David Li
> [C++] Comparison kernel(s) for decimals
> ---------------------------------------
>
> Key: ARROW-13966
> URL: https://issues.apache.org/jira/browse/ARROW-13966
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Jonathan Keane
> Assignee: David Li
> Priority: Major
> Labels: kernel, types
>
> Even decimal-decimal comparisons return an error:
> {code:r}
> > Scalar$create(1.5)$cast(decimal(15, 2)) >
> > Scalar$create(1.1)$cast(decimal(15, 2))
> Error: NotImplemented: Function greater has no kernel matching input types
> (scalar[decimal128(15, 2)], scalar[decimal128(15, 2)])
> {code}
> Ideally, we would also be able to (autocast in order to) compare
> decimal-float or decimal-integer.
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