apache/arrow-adbc apache-arrow-adbc-25-rc2

ADBC Libraries apache-arrow-adbc-25-rc2

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ADBC Libraries 25 (2026-10-21)

Versions

• C/C++/GLib/Go/Python/Ruby: 1.13.0
• C#: 1.0.0 (core), 0.25.0 (drivers)
• Java: 0.25.0
• R: 0.25.0
• Rust: 0.25.0

Breaking Changes

• ⚠️ go: split Flight SQL into its own module (#4754)
• ⚠️ rust/ffi: importing partitions is unsafe (#4876)
• ⚠️ rust/ffi: require Send for exported types (#4874)

New Features

• c: add source context to manifest and profile parse errors (#4633)
• c: require C++20 as the baseline (#4610)
• c/driver/postgresql: add POSTGRESQL:type metadata (#4687)
• c/driver/postgresql: expose numeric result type modifiers (#4798)
• c/driver/postgresql: implement COPY writer for time types (#4819)
• c/driver/postgresql: set use_copy on connect (#4750)
• c/driver/postgresql: support bind/query arrow.uuid <=> uuid (#4612)
• c/driver/postgresql: use preinitialized type resolver (#4775)
• c/driver/sqlite: ensure batch rows option can be retrieved (#4645)
• c/driver_manager: polyfill numeric options for 1.0 drivers (#4774)
• csharp: add ADBC 1.1 support to the base classes and C interop (#4885)
• csharp: add async and cancellation support to the base classes (#4895)
• csharp: collect garbage when an exported driver goes idle (#4917)
• csharp: support extension types in the ADO.NET client (#4919)
• csharp: support typed options in connection profiles (#4914)
• csharp: version core packages as 1.0, separately from drivers (#4923)
• csharp/src/Client: use the cancellable statement APIs in AdbcCommand (#4901)
• dev/release: verify binary JARs on Unix-like platforms (#4646)
• dev/release: verify binary JARs on Windows (#4624)
• ⚠️ go: split Flight SQL into its own module (#4754)
• go/adbc: require go1.26 and bump toolchain to 1.26.8 (#4748)
• go/adbc/driver/flightsql: handle is_update in prepared stmts (#4161)
• go/adbc/driver/flightsql: promote safe call headers into FlightSQL spans (#4570)
• java/driver/flight-sql: support flightsql:// URI scheme (#4539)
• javascript: publish a win32-arm64 native package (#4634)
• rust: define cancellation in a sensible way (#3905)

Bugfixes

• c/driver/postgresql: add missing space in error messages (#4756)
• c/driver/postgresql: check child nulls in ingest (#4848)
• c/driver/postgresql: drain all results post-query (#4710)
• c/driver/postgresql: fix ingestion of certain negative decimal values (#4850)
• c/driver/postgresql: improve SQLSTATE error mapping (#4587)
• c/driver/postgresql: show temporary schemas in GetObjects (#4824)
• c/driver/postgresql: use fmt for error messages (#4627)
• c/driver/sqlite: bring driver up to par, enable validation (#4845)
• c/driver/sqlite: clean up dangling txn on failed ingest (#4843)
• c/driver/sqlite: format extreme time/date values properly (#4841)
• c/driver/sqlite: handle other error codes (#4842)
• c/driver/sqlite: only count rows_affected when applicable (#4826)
• c/validation: allow configuring the secondary database schema (#4793)
• c/validation: compare widened ingestion values (#4778)
• c/validation: exercise binary view input in ingestion test (#4777)
• csharp: build net472 on all platforms so the Testing package ships it (#4605)
• csharp: fall back to the standard driver entrypoint (#4815)
• csharp: fix bugs in the C driver importer and exporter (#4884)
• csharp: match the driver manager spec for entry point name (#4912)
• csharp: return true from AdbcDataReader.IsDBNull for null values (#4920)
• csharp: serialize NaN and infinity in struct JSON (#4921)
• csharp: update Microsoft.SourceLink.GitHub for vulnerability (#4772)
• csharp/src/Client: stop blocking on async calls in the ADO.NET wrapper (#4716)
• csharp/src/Drivers/BigQuery: harden metadata query identifier and pattern handling (#4757)
• go/adbc/driver: corrects 'none' trace exporter handling (#4822)
• go/adbc/drivermgr: terminate GetObjects table_types with NULL (#4596)
• go/adbc/pkg: treat the "warn" log level as warning (#4881)
• go/adbc/sqldriver: return owned copies of string/binary values (#4625)
• python/adbc_driver_manager: allow more key types in get_option (#4734)
• python/adbc_driver_manager: pass table_types filter to GetObjects (#4712)
• python/adbc_driver_manager: reimport PyArrow if installed mid-session (#4641)
• rust/driver_manager: allow cancel to be truly concurrent (#4858)
• rust/driver_manager: load with RTLD_NOW (#4665)
• rust/ffi: avoid potential overlapping &mut in exporter (#4875)
• rust/ffi: avoid undefined behavior in exported drivers (#4871)
• rust/ffi: clear release callback on partitions after release (#4873)
• rust/ffi: don't assume errors have extended info (#4872)
• ⚠️ rust/ffi: importing partitions is unsafe (#4876)
• ⚠️ rust/ffi: require Send for exported types (#4874)

Documentation Improvements

• add Teradata to Flight SQL compatible systems (#4792)
• add adbcBridge to the Tools & Integrations page (#4733)
• add chdb to drivers table (#4707)
• add presto to drivers table (#4732)
• describe Windows/PowerShell verification as well (#4662)
• fix chdb url in drivers table (#4708)
• make sure release maintainer updates arrow clone (#4607)
• update OG image to use new ADBC logo lockup (#4886)
• update drivers list (#4897)
• update java entry to include kotlin and scala (#4896)
• update link for DuckDB ADBC scanner extension (#4816)
• use better example version number in verification docs (#4598)
• use new logo and add visual identity page (#4870)

Performance Improvements

• c/driver/postgresql: vendor boost.int128 for Windows (#4847)