rok commented on a change in pull request #12105:
URL: https://github.com/apache/arrow/pull/12105#discussion_r787013516
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File path: cpp/src/arrow/compute/kernels/scalar_arithmetic.cc
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@@ -2428,6 +2435,20 @@ void RegisterScalarArithmetic(FunctionRegistry*
registry) {
DCHECK_OK(subtract->AddKernel({in_type, in_type}, duration(unit),
std::move(exec)));
}
+ // Add subtract(time32, time32) -> duration
+ for (auto unit : {TimeUnit::SECOND, TimeUnit::MILLI}) {
+ InputType in_type(match::Time32TypeUnit(unit));
+ auto exec = ScalarBinaryEqualTypes<Int64Type, Time32Type,
SubtractTime32>::Exec;
+ DCHECK_OK(subtract->AddKernel({in_type, in_type}, duration(unit),
std::move(exec)));
+ }
+
+ // Add subtract(time64, time64) -> duration
+ for (auto unit : {TimeUnit::MICRO, TimeUnit::NANO}) {
+ InputType in_type(match::Time64TypeUnit(unit));
+ auto exec = ScalarBinaryEqualTypes<Int64Type, Time64Type, Subtract>::Exec;
+ DCHECK_OK(subtract->AddKernel({in_type, in_type}, duration(unit),
std::move(exec)));
+ }
+
DCHECK_OK(registry->AddFunction(std::move(subtract)));
// ----------------------------------------------------------------------
Review comment:
Done.
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