pitrou commented on code in PR #43957:
URL: https://github.com/apache/arrow/pull/43957#discussion_r1761552917
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cpp/src/arrow/compute/kernels/aggregate_internal.h:
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@@ -52,6 +52,16 @@ struct FindAccumulatorType<I, enable_if_floating_point<I>> {
using Type = DoubleType;
};
+template <typename I>
+struct FindAccumulatorType<I, enable_if_decimal32<I>> {
+ using Type = Decimal64Type;
Review Comment:
It doesn't make sense, especially if the decimal precision remains the same
(which it probably does?).
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