rok commented on a change in pull request #12136:
URL: https://github.com/apache/arrow/pull/12136#discussion_r789718949
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File path: cpp/src/arrow/compute/kernels/scalar_arithmetic.cc
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@@ -1693,7 +1692,9 @@ struct ArithmeticFunction : ScalarFunction {
if (values->size() == 2) {
ReplaceNullWithOtherType(values);
- if (auto type = CommonNumeric(*values)) {
+ if (auto type = CommonTemporal(values->data(), values->size())) {
Review comment:
How about renaming `CommonTemporal` to `CommonResolution` and returning
finest time unit resolution?
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