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[Python][Acero] Provide method to perform aggregations with acero for datasets

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### Describe the enhancement requested Presently, `Dataset` has methods to perform several actions—`sort_by`, `join`, and `join_asof`—with Acero. It would be especially helpful to provide a method to perform aggregations on...

sidneymau

GH-43519: [Python][CI] Update Python 3.13 rc to final 3.13.0

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### Rationale for this change The final Python 3.13.0 is out now, so we can update those versions * GitHub Issue: #43519

jorisvandenbossche

### Describe the bug, including details regarding any error messages, version, and platform. I'm using the python pyarrow module and running into this strange behavior when casting strings into a...

stevenlandis-rl

GH-17211: [C++] Add hash_64 scalar compute function

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This PR is a fresh continuation of https://github.com/apache/arrow/pull/13487 which was closed purely in favor of this one. The reason for this is that the other PR carried a lot of...

drin

[Python] Support pandas future default string dtype

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With pandas' [PDEP-14](https://pandas.pydata.org/pdeps/0014-string-dtype.html) proposal, pandas is planning to introduce a default string dtype in pandas 3.0 (instead of the current object dtype). This will become the default in pandas 3.0,...

jorisvandenbossche

GH-44378: [CI][C++] Add clang-cl job

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### Rationale for this change We have a document that uses clang-cl: https://arrow.apache.org/docs/developers/cpp/windows.html#building-on-windows-arm64-using-ninja-and-clang But we don't have a job that uses clang-cl. So clang-cl build may be broken unexpectedly. ###...

kou

### Describe the enhancement requested We have a document that uses clang-cl: https://arrow.apache.org/docs/developers/cpp/windows.html#building-on-windows-arm64-using-ninja-and-clang But we don't have a job that uses clang-cl. ### Component(s) C++

kou

GH-44054: [C++] Implement PostgreSQL dedicated date extracting functions

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### Rationale for this change Described in https://github.com/apache/arrow/issues/44054. ### What changes are included in this PR? Implement three functions to extract PG's DATA/TIMESTAMP data type. They use a common class...

mdianjun

[R] cannot mutate into a hive-partition key

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### Describe the bug, including details regarding any error messages, version, and platform. There are use-cases where I cannot use the "normal" filtering with hive-partitioning and must `open_dataset` directly on...

r2evans

[C++] Binary View Compute Kernels

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### Describe the enhancement requested Is there a larger plan to start adding compute kernels for the binary view types? I see dedicated issues like https://github.com/apache/arrow/issues/43010 but I'm not sure...

WillAyd