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@Query-farm

Query.Farm

We build with DuckDB. Extensions. Products. Consulting. Tools.

🚜 Query.Farm

We build with DuckDB — extensions, products, consulting, and tools.

🦆 DuckDB, Extended

Query.Farm is a product studio focused on extending DuckDB.

We write DuckDB extensions, build developer tools, and help teams embed DuckDB into modern data systems.

If you’re working with DuckDB, we can help you accomplish great things.

💼 What We Offer

🧩 DuckDB Extension Development

We build native DuckDB extensions in C++ and Rust — from custom functions and table sources to new file formats and catalogs.

If DuckDB doesn’t do it yet, we can make it happen.

🛠️ Tools & Products

We’re building software around DuckDB and Apache Arrow: libraries, connectors, developer utilities, and full-stack integrations.

Get in touch to learn more or ask about early access.

🧠 Expert Consulting

From performance tuning to production deployment, we help teams use DuckDB effectively — embedded, at the edge, or in the cloud.

Whether you’re starting fresh or scaling fast, we can guide the way.

👋 Let’s Talk

If you’re building with DuckDB — or want to — we’d love to help.

📬 [email protected]

🌾 About Query.Farm

We’re data people — database engineers, systems hackers, and DuckDB contributors focused on building powerful, lightweight solutions.

We help teams get the most out of DuckDB: fast, open, and local analytics at your fingertips.

  • Query.Farm is an independent company.
  • We’re not affiliated with DuckDB Labs or the DuckDB Foundation.
  • We build on the public DuckDB project, and deeply respect the team behind it — many of whom we count as friends and collaborators in the broader DuckDB ecosystem.

Pinned Loading

  1. airport airport Public

    DuckDB extension for querying, modifying, and storing data through Apache Arrow Flight servers.

    C++ 351 27

  2. shellfs shellfs Public

    DuckDB extension for reading from and writing to Unix shell pipelines through file operations.

    C++ 97 5

  3. lindel lindel Public

    DuckDB extension for encoding and decoding multidimensional values with Hilbert and Morton (Z-order) space-filling curves.

    C++ 67 6

  4. datasketches datasketches Public

    DuckDB extension for approximate analytics with Apache DataSketches: distinct counts, quantiles, frequent items, set operations, and sampling.

    C++ 57 5

  5. evalexpr_rhai evalexpr_rhai Public

    DuckDB extension for running Rhai scripts and evaluating expressions in SQL queries.

    C++ 27

  6. crypto crypto Public

    DuckDB extension for cryptographic hashes, HMACs, key derivation (PBKDF2, HKDF, scrypt, Argon2), and secure random bytes.

    C++ 31 7

Repositories

Showing 10 of 301 repositories
  • vgi-pii Public

    PII detection, redaction & anonymization for DuckDB (Python, Microsoft Presidio)

    Query-farm/vgi-pii's past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-lint-check Public

    Lint the documentation & metadata quality of VGI (Vector Gateway Interface) data workers — descriptions, column comments, tags, and example queries — with a quality score, per-version baselines, and agent-friendly output.

    Query-farm/vgi-lint-check's past year of commit activity
    Python 0 0 0 0 Updated Nov 15, 2026
  • vgi-nws Public

    National Weather Service APIs, radar grids, and NOAA products as TypeScript VGI SQL functions

    Query-farm/vgi-nws's past year of commit activity
    Jupyter Notebook 0 0BSD 0 1 2 Updated Nov 15, 2026
  • vgi-cloudflare Public

    The Cloudflare API as ordinary DuckDB tables — a read-only VGI worker by Query.Farm

    Query-farm/vgi-cloudflare's past year of commit activity
    Python 0 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-symbols Public

    Native stack symbolication in DuckDB with SQL — resolve (build_id, address) to function/file/line from DWARF and PDB debug info, with a stateful cache. A VGI worker.

    Query-farm/vgi-symbols's past year of commit activity
    Jupyter Notebook 1 MIT 0 0 5 Updated Nov 15, 2026
  • vgi-trading-calendar Public

    Stock-exchange trading calendars — sessions, market hours & schedules — for DuckDB (Python)

    Query-farm/vgi-trading-calendar's past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-poi Public

    Rich Excel read (formulas/types) and write query to .xlsx for DuckDB (Java, Apache POI)

    Query-farm/vgi-poi's past year of commit activity
    Jupyter Notebook 1 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-xslt Public

    XSLT 3.0 / XQuery 3.1 / XPath 3.1 over XML for DuckDB (Python, SaxonC-HE)

    Query-farm/vgi-xslt's past year of commit activity
    Jupyter Notebook 1 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-audio Public

    Audio features — tempo, MFCC, spectral, key & beats for DuckDB (Python, librosa)

    Query-farm/vgi-audio's past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Nov 15, 2026
  • vgi-polymarket Public

    Read-only VGI connector exposing Polymarket prediction-market data to DuckDB/SQL

    Query-farm/vgi-polymarket's past year of commit activity
    Jupyter Notebook 0 MIT 0 0 0 Updated Nov 15, 2026

People

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