June 2026 monthly summary for PRQL/prql: Key feature delivered a correctness-focused bug fix for SQL generation in joined queries with sorting. The fix prevents leakage of the inner join branch's sort state into the outer pipeline's implicit ORDER BY during a take, by snapshotting and restoring the input sort state during join and append transformations. A regression test was added to verify correct SQL generation for joined queries with sorting.

April 2026 monthly summary for PRQL/prql focusing on dependency stability and cross-version compatibility. Delivered a key feature: Chrono Dependency Compatibility Enhancement, which relaxes the chrono constraint to support a broader range of versions, improving compatibility and build stability across environments. This change reduces dependency conflicts and simplifies CI, contributing to smoother onboarding for downstream users.

December 2024: Delivered IPC Schema-level Custom Metadata Support for Polars (pola-rs/polars). Implemented in Rust with changes to file and stream readers/writers to read/write custom metadata at the IPC schema level, enabling richer data interchange and interoperability with external systems. This work lays groundwork for metadata-driven IPC workflows and expands Polars' data-exchange capabilities. No major bugs reported in scope; feature validated via targeted tests and integration checks.