This is the second release candidate for 1.9.0. We're continuing to seek feedback on the native async SQLAlchemy support introduced in RC1. Please try it in your applications and report any issues.
pip install "clickhouse-connect[sqlalchemy-async]==1.9.0rc2"New in RC2
This RC adds Rust codec performance improvements from main. It contains no new async SQLAlchemy changes.
- Small responses avoid a read-ahead thread, and the first chunk is delivered immediately.
- Pandas string columns are built directly from Arrow buffers. Values, dtypes, and invalid UTF-8 handling remain unchanged.
If you use the Rust codec, please also test small concurrent queries and string-heavy pandas results.