Skip to content

GH-47252: [C++][Compute] Fix sort_indices for temporal types in arrow::Table. #50270

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
nfrmtk wants to merge 2 commits into
base: main
Choose a base branch
from
+27 −2
Open

GH-47252: [C++][Compute] Fix sort_indices for temporal types in arrow::Table. #50270

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
fdc15ca
fix
nfrmtk Jun 26, 2026
8dfccc0
fix
nfrmtk Jun 26, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions cpp/src/arrow/compute/kernels/vector_sort_internal.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -780,14 +780,15 @@ struct ResolvedTableSortKey {
// so we can't simply access the column from the table directly.
ArrayVector chunks;
chunks.reserve(batches.size());
auto physical_type = GetPhysicalType(f.type->GetSharedPtr());
int64_t null_count = 0;
for (const auto& batch : batches) {
ARROW_ASSIGN_OR_RAISE(auto child, f.path.GetFlattened(*batch));
null_count += child->null_count();
chunks.push_back(std::move(child));
chunks.push_back(GetPhysicalArray(*child, physical_type));
}

return ResolvedTableSortKey(f.type->GetSharedPtr(), std::move(chunks), f.order,
return ResolvedTableSortKey(physical_type, std::move(chunks), f.order,
f.null_placement, null_count);
};

Expand Down
24 changes: 24 additions & 0 deletions cpp/src/arrow/compute/kernels/vector_sort_test.cc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1739,6 +1739,30 @@ TEST_F(TestTableSortIndices, Decimal) {
AssertSortIndices(table, options, "[3, 4, 0, 2, 1]");
}

TEST_F(TestTableSortIndices, Timestamp) {
auto schema = ::arrow::schema({
{field("a", timestamp(TimeUnit::MICRO))},
{field("b", timestamp(TimeUnit::MICRO))},
});
std::vector<SortKey> sort_keys{SortKey("a", SortOrder::Ascending),
SortKey("b", SortOrder::Descending)};

auto table = TableFromJSON(schema, {R"([{"a": 1, "b": 2},
{"a": 3, "b": 4},
{"a": 8, "b": 6}
])",
R"([{"a": 6, "b": null},
{"a": 6, "b": 7}
])"});
SortOptions options(sort_keys);
AssertSortIndices(table, options, "[0, 1, 4, 3, 2]");
options.sort_keys[0].null_placement = NullPlacement::AtStart;
AssertSortIndices(table, options, "[0, 1, 4, 3, 2]");
options.sort_keys[1].null_placement = NullPlacement::AtStart;
AssertSortIndices(table, options, "[0, 1, 3, 4, 2]");

}

TEST_F(TestTableSortIndices, NullType) {
auto schema = arrow::schema({
field("a", null()),
Expand Down