Jonathan Keane created ARROW-13966:
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Summary: [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
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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