~/talk

DuckDB Extension Development Workshop – Part 1

Talkat DuckDB Developer Meeting #1 · on Friday, 2026-01-30· [databases]
slides:none on file

Hands-on build of a DuckDB extension that registers a scalar function computing Easter dates, using the official extension template and a CMake/Ninja build flow to produce a shared library or static debug binary. The function uses DuckDB’s vectorized model and a unary executor to run the year→date conversion across 2048-row chunks (standard_vector_size), and the repo includes SQLUnit tests that run against the debug build to prove correctness.

AI-written summary · about

  1. 0:00Introduction
  2. 8:54Scalar function step by step
  3. 16:26Vectorized execution
  4. 21:21Registering functions
  5. 27:24Executors for functions
  6. 30:44Extension documentation
  7. 35:55Testing with SQLUnit
  8. 38:27Summary
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