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dataframe-lazy: Lazy query engine for the dataframe ecosystem.

[ data, library, mit ] [ Propose Tags ] [ Report a vulnerability ]

The lazy/streaming query engine: relational-algebra plans, optimizer, pull-based executor, and column-oriented spill format. Includes the typed lazy wrapper. Currently depends on dataframe-csv and dataframe-parquet since the executor calls those readers directly.

Modules

[Last Documentation]

  • DataFrame
    • DataFrame.Lazy
      • IO
        • DataFrame.Lazy.IO.Binary
        • DataFrame.Lazy.IO.CSV
    • Typed
      • DataFrame.Typed.Lazy

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Versions [RSS] 1.0.0.0, 1.0.1.0, 1.0.1.1, 1.0.2.0, 1.1.0.0, 1.1.0.2, 2.0.0.0, 2.1.0.0, 2.2.0.0, 2.3.0.0, 2.4.0.0, 2.4.1.0
Dependencies async (>=2.2 && <3), attoparsec (>=0.12 && <0.16), base (>=4 && <5), bytestring (>=0.11 && <0.14), containers (>=0.6.7 && <0.10), dataframe-core (>=2.5 && <2.6), dataframe-csv (>=2.3 && <2.4), dataframe-operations (>=2.5 && <2.6), dataframe-parquet (>=1.5.0.1 && <1.6), dataframe-parsing (>=2.2 && <2.3), directory (>=1.3.0.0 && <2), filepath (>=1.4 && <2), Glob (>=0.10 && <1), stm (>=2.5 && <3), temporary (>=1.3 && <2), text (>=2.1 && <3), vector (>=0.13 && <0.15) [details]
Tested with ghc ==9.4.8 || ==9.6.7 || ==9.8.4 || ==9.10.3 || ==9.12.2
License MIT
Copyright (c) 2024-2026 Michael Chavinda
Author Michael Chavinda
Maintainer mschavinda@gmail.com
Uploaded by mchav at 2026-08-29T20:13:34Z
Revised Revision 1 made by mchav at 2026-08-30T04:19:50Z
Category Data
Bug tracker https://github.com/mchav/dataframe/issues
Distributions Stackage:2.4.0.0
Reverse Dependencies 4 direct, 8 indirect [details]
Downloads 100 total (31 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
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Status Docs not available [build log]
All reported builds failed as of 2026-08-29 [all 2 reports]