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beam v0.11.1.0 Release Notes

Release Date: 2026-05-13 // 3 months ago

  • 🆕 New features

    • ➕ Added a cross-backend abstraction for the COPY statement in
      Database.Beam.Backend.SQL.BeamExtensions:
      • file-mode COPY ... TO 'file' / COPY ... FROM 'file'. Defines
        MonadBeamCopyTo / MonadBeamCopyFrom, and the user-facing
        🏗 copyTableTo / copySelectTo / copyTableFrom builders.
      • streaming COPY ... TO STDOUT / COPY ... FROM STDIN. Mirrors the file-mode
        API: MonadBeamCopyToStream / MonadBeamCopyFromStream,
        🏗 and the copyTableToStream / copySelectToStream / copyTableFromStream builders.

    🐛 Bug fixes

    • 🛠 Fixed an issue where a window function applied over the result of nub_ (or
      the Postgres-specific pgNubBy_) would emit DISTINCT and the window
      expression in the same SELECT, causing the window to evaluate against the
      pre-deduplicated rows. The inner select is now materialised as a subquery
      whenever it carries DISTINCT, GROUP BY, or HAVING (#756).

    Dependencies

    • ✂ Removed dependency on ghc-prim.

Previous changes from v0.11.0.0

  • What's Changed

    👀 See beam-core 0.11's changelog