Neal Richardson created ARROW-11080:
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Summary: [C++][Dataset] Improvements to implicit casting
Key: ARROW-11080
URL: https://issues.apache.org/jira/browse/ARROW-11080
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Neal Richardson
Assignee: Ben Kietzman
Fix For: 3.0.0
Followup to ARROW-10322. In ARROW-9187, where we started making use of more
compute functions in R, we found a couple of places where implicit casts
weren't being inserted where they should:
*
https://github.com/apache/arrow/pull/8947/commits/843ff2a39d8a4e1c92247fb672567c0b85b4f45a#diff-79100695986bbd6a63704fe9f238ce3ae9a39ddd093b7f6b213d4a722309d20aR576
"Function multiply_checked has no kernel matching input types (scalar[double],
array[int32])"
*
https://github.com/apache/arrow/pull/8947/commits/843ff2a39d8a4e1c92247fb672567c0b85b4f45a#diff-79100695986bbd6a63704fe9f238ce3ae9a39ddd093b7f6b213d4a722309d20aR590
"Function add_checked has no kernel matching input types (array[double],
array[int32])" because implicit casts are only applied to scalars to cast them
to the type of the other argument
This may speak to a need for more rules around how inputs should be
casted/promoted in different contexts.
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