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build(deps): bump polars from 1.44.2 to 2.0.0 - #368

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Bumps polars from 1.44.2 to 2.0.0.

Release notes

Sourced from polars's releases.

Python Polars 2.0.0

💥 Breaking changes

  • Run SQL window functions over grouped rows on the aggregated rows, and evaluate QUALIFY before the projection (#29746)
  • Type exact SQL numeric literals as Decimal and truncate SQL %/DIV (#29536)
  • Allow deterministic expression plugins to opt into CSE/CSPE (#29428)
  • Read Parquet ENUM type as pl.String (#29331)
  • More map operations (#29296)
  • Deprecate cut/qcut (#29329)

🚀 Performance improvements

  • Fix phases ending too soon due to join sampling (#29752)
  • Group record batch fetches of remote IPC scans (#29750)
  • Mark group-by node as memory intensive pipeline blocker (#29749)
  • Don't inline slow OOC memory drift path (#29745)
  • Only prefetch on unspill when there is memory headroom (#29701)
  • Pushdown filters to scan_lance (#29538)
  • Do not materialize equal ScalarColumns in Column::append/extend (#28989)
  • Evaluate scalar windows in the streaming window node (#29698)
  • Don't materialize scalar columns in DataFrame::estimated_size (#29711)
  • Defer cached pread from prefetch to decode for Parquet (#29702)
  • Decode IPC scans out of order when order is not observed (#29675)
  • IPC metadata suffix fetch (#29692)
  • Speed up null tracking in streaming group-by sum, min and max (#29691)
  • Cache Iceberg manifest files across scans (#29623)
  • Improve pushdown support for fallible Hive predicates (#29594)
  • Streamline BytecodeParser method rewriting (#29632)
  • Stream from_dicts records straight into column buffers (#29656)
  • Read correlated SQL aggregates from the outer join when the subquery repeats it (#29685)
  • Emit files unordered for remote IPC files when order not observed (#29678)
  • Don't keep input order for order-insensitive windows in all engines (#29680)
  • Fix parallelization in top-k reducer (#29684)
  • Share one bloom filter between the build threads of a runtime filter (#29677)
  • Add streaming (out-of-core) sort (#29657)
  • Insert keys that start a run of equal keys into the hot group-by table right away (#29673)
  • Prefetch key-row hash table lookups in blocks (#29663)
  • Lower count-guarded sums to a sum that is null on empty input (#29668)
  • Use single PUT for small cloud uploads (#29603)
  • Don't cache plain scans in the streaming engine (#29654)
  • Change single-key group-by hash table layout and add prefetching (#29661)
  • Use the integer ranges of sampled parquet row groups in filter estimates (#29655)
  • Raise HTTP rate-limiter read init default (#29584)
  • Change join hash table layout and add prefetching (#29653)
  • Add a fast-path for as_list with only a single input (#29592)
  • Use one runtime filter builder per thread for a finished sample (#29646)
  • Compute decimal addition, subtraction and multiplication in i64 when values fit (#29638)
  • Spread decimal sums and means over lanes and check the sum's 38 digits once (#29637)
  • Compute decimal addition, subtraction and multiplication without per-row validity (#29634)
  • Skip or reuse UDF disassembly in BytecodeParser (#29625)

... (truncated)

Commits
  • 22a147d perf: Fix phases ending too soon due to join sampling (#29752)
  • e319cca Python Polars 2.0 (#29723)
  • d1d6ba4 fix: Find SQL aggregates by their function name, and raise on nested aggregat...
  • 5c6a473 perf: Group record batch fetches of remote IPC scans (#29750)
  • c630040 perf: Mark group-by node as memory intensive pipeline blocker (#29749)
  • e1fbe49 fix: Run SQL window functions over grouped rows on the aggregated rows, and e...
  • 3de661d feat: Enable OOC by default with 80% of available RAM as threshold (#29741)
  • 0159b45 refactor: Hold the category mapping in the categorical is_in lookup (#29747)
  • 29995b3 perf: Don't inline slow OOC memory drift path (#29745)
  • 8399cf6 fix: Match categories added after is_in prepares a string haystack (#29744)
  • Additional commits viewable in compare view

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Bumps [polars](https://github.com/pola-rs/polars) from 1.44.2 to 2.0.0.
- [Release notes](https://github.com/pola-rs/polars/releases)
- [Commits](pola-rs/polars@py-1.44.2...py-2.0.0)

---
updated-dependencies:
- dependency-name: polars
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python:uv Pull requests that update python:uv code labels Oct 14, 2026

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