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What is duckdblabs-arrow?

pdet/duckdblabs-arrow — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2025-05-12

C++Audience · dataComplexity · 3/5StaleSetup · moderate

In one sentence

A DuckDB extension that converts data between DuckDB's native format and Apache Arrow, though it's being retired in favor of the nanoarrow extension.

Mindmap

mindmap
  root((repo))
    What it does
      Converts DuckDB to Arrow
      Loads Arrow data into DuckDB
      Being retired
    Tech stack
      C++
      DuckDB
      Apache Arrow
    Use cases
      Data pipeline handoff
      Feed data into Python ML tools
      Query Arrow data with SQL
    Audience
      Data engineers
      Data analysts

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Convert a DuckDB table into Arrow format to send it to another tool like a Python ML library.

USE CASE 2

Load Arrow-formatted data from another source directly into DuckDB to query it with SQL.

USE CASE 3

Move data between multiple tools in a pipeline without rewriting it into different formats each time.

What is it built with?

C++DuckDBApache Arrow

How does it compare?

pdet/duckdblabs-arrowachanana/mavsdkalange/llama.cpp
Stars——0
LanguageC++C++C++
Last pushed2025-05-122024-05-20—
MaintenanceStaleDormant—
Setup difficultymoderatemoderatemoderate
Complexity3/54/54/5
Audiencedatadeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

As of DuckDB 1.3 this extension is deprecated, new projects should use the nanoarrow extension instead.

No license information is mentioned in the explanation.

Copy-paste prompts

Prompt 1
Explain how this DuckDB Arrow extension converts tables into Arrow-formatted blobs.
Prompt 2
Help me use this extension to move data from DuckDB into a Python machine learning pipeline.
Prompt 3
Why is this extension being retired, and how do I switch to the nanoarrow extension instead?
Prompt 4
Show me how to load Arrow data back into DuckDB using this extension.

Frequently asked questions

What is duckdblabs-arrow?

A DuckDB extension that converts data between DuckDB's native format and Apache Arrow, though it's being retired in favor of the nanoarrow extension.

What language is duckdblabs-arrow written in?

Mainly C++. The stack also includes C++, DuckDB, Apache Arrow.

Is duckdblabs-arrow actively maintained?

Stale — no commits in 1-2 years (last push 2025-05-12).

What license does duckdblabs-arrow use?

No license information is mentioned in the explanation.

How hard is duckdblabs-arrow to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is duckdblabs-arrow for?

Mainly data.

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