pitrou commented on a change in pull request #11313:
URL: https://github.com/apache/arrow/pull/11313#discussion_r742942036
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File path: cpp/src/arrow/compute/kernels/aggregate_test.cc
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@@ -3541,6 +3649,24 @@ TEST(TestQuantileKernel, AllNullsOrNaNs) {
}
}
+TEST(TestQuantileKernel, Decimal) {
+ auto check = [](const std::shared_ptr<Array>& input, QuantileOptions options,
+ const std::shared_ptr<Array>& expected) {
+ ASSERT_OK_AND_ASSIGN(Datum out, Quantile(input, options));
+ auto out_array = out.make_array();
+ ValidateOutput(*out_array);
+ AssertArraysEqual(*expected, *out_array, /*verbose=*/true);
+ };
+ for (const auto& ty : {decimal128(3, 2), decimal256(3, 2)}) {
+ check(ArrayFromJSON(ty, R"(["1.00", "5.00", null])"),
+ QuantileOptions(0.5, QuantileOptions::LINEAR),
+ ArrayFromJSON(float64(), R"([3.00])"));
Review comment:
Ah, fair enough. No choice will be perfect anyway.
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