Highlights

• Appender::append_rows now accepts tuples for heterogeneous data types directly.
• Loadable extension setup simplified: single loadable-extension feature replaces vtab-loadable + loadable-extension.
• duckdb_entrypoint_c_api macro re-exported from main crate - no need to depend on duckdb-loadable-macros directly anymore.
• stream_arrow() now works with CALL statements via automatic fallback to duckdb_fetch_chunk().
• Streaming execution returns descriptive DuckDB error messages instead of "Unknown error code".
• Performance: ~2x faster column name lookups via lazy HashMap cache; removed redundant null checks; zero-copy FlatVector::insert for strings.
• Build: fixed static linking (libduckdb_static.a) and cargo cache invalidation from absolute OUT_DIR.
• Updated bundled DuckDB to v1.4.4 and Rust to 1.93.

What's Changed

• Update Cargo.lock and bump crate version in README by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/646
• Remove legacy duckdb_entrypoint macro by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/652
• Re-export duckdb_entrypoint_c_api from main crate by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/653
• Consolidate loadable extension features by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/654
• Update Rust to 1.92 by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/656
• fix(build): prevent cargo cache invalidation from absolute OUT_DIR path by @cameronraysmith in https://github.com/duckdb/duckdb-rs/pull/658
• libduckdb-sys/build.rs: fix link directive when statically linking by @brunal in https://github.com/duckdb/duckdb-rs/pull/655
• performance(row): remove useless null check in value_ref_internal by @fvaleye in https://github.com/duckdb/duckdb-rs/pull/662
• Enable stream_arrow() to work with CALL statements by @leo-altertable in https://github.com/duckdb/duckdb-rs/pull/660
• Extract error messages in execute_streaming to provide descriptive errors by @redox in https://github.com/duckdb/duckdb-rs/pull/661
• performance(statement): introduce a lazy cache for column name to index by @fvaleye in https://github.com/duckdb/duckdb-rs/pull/663
• Avoid unnecessary copy and allocation in FlatVector::insert by @sfc-gh-bhannel in https://github.com/duckdb/duckdb-rs/pull/665
• feat: implement AppenderParams for tuples by @MathewBravo in https://github.com/duckdb/duckdb-rs/pull/647
• Update Rust to 1.93 by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/669
• Update DuckDB to v1.4.4 by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/671
• Update copyright year by @mlafeldt in https://github.com/duckdb/duckdb-rs/pull/672

New Contributors

• @cameronraysmith made their first contribution in https://github.com/duckdb/duckdb-rs/pull/658
• @brunal made their first contribution in https://github.com/duckdb/duckdb-rs/pull/655
• @redox made their first contribution in https://github.com/duckdb/duckdb-rs/pull/661
• @sfc-gh-bhannel made their first contribution in https://github.com/duckdb/duckdb-rs/pull/665
• @MathewBravo made their first contribution in https://github.com/duckdb/duckdb-rs/pull/647

Full Changelog: https://github.com/duckdb/duckdb-rs/compare/v1.4.3...v1.4.4