← Wednesday, October 7, 2026DatabasesRelease

Polars 2.0 adds out-of-core support and first-class SQL

pola.rs 7 min read Editor score 8/10

Polars 2.0 adds spill-to-disk support, SQL features, and performance changes; its authors report leading DataFusion and DuckDB on TPC-H and TPC-DS benchmarks. The release is relevant to engineers choosing analytical data engines.

What

- Polars 2.0 adds initial spill-to-disk support and treats SQL as a first-class workload.

How

- LazyFrame.collect now defaults to the streaming engine; SQL performance work includes join reordering and dynamic predicates.

Why it matters

- Spill-to-disk provides an out-of-core execution path, while expanded SQL support makes the engine available to more workloads.

Read on pola.rs → Hacker News · 99 commentsLobsters

Headline, summary, brief and diagram are written by a model from the source's own text; the link, byline and numbers come from the source. Read the original before relying on a claim.