aucahuasi commented on a change in pull request #11257:
URL: https://github.com/apache/arrow/pull/11257#discussion_r718660462
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File path: cpp/src/arrow/compute/kernels/aggregate_basic.cc
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@@ -754,6 +839,30 @@ void RegisterScalarAggregateBasic(FunctionRegistry*
registry) {
aggregate::CountInit, func.get());
DCHECK_OK(registry->AddFunction(std::move(func)));
+ func = std::make_shared<ScalarAggregateFunction>(
+ "count_distinct", Arity::Unary(), &count_distinct_doc,
&default_count_options);
+
+ // Takes any input, outputs int64 scalar
+ aggregate::AddCountDistinctKernel<Int8Type>(int8(), func.get());
+ aggregate::AddCountDistinctKernel<Int16Type>(int16(), func.get());
+ aggregate::AddCountDistinctKernel<Int32Type>(int32(), func.get());
+ aggregate::AddCountDistinctKernel<Date32Type>(date32(), func.get());
+ aggregate::AddCountDistinctKernel<Int64Type>(int64(), func.get());
Review comment:
@lidavidm What types would I need to register if I want to use the
`PhysicalType` snippet? I don't see how many lines of code I can cut off by
using the `PhysicalType`. Thanks!
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