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Jelte Fennema-Nio

@jeltef.nl
288 followers 106 following 11 posts

Postgres contributor who's combining DuckDB & Postgres at @motherduck.com

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Jelte Fennema-Nio @jeltef.nl · 31/03/2026
This has been my last few months: Getting MotherDuck to speak the Postgres protocol! There's still a long road ahead to support all the BI and schema management tools. But I won't rest until \d works! But first some parental leave. motherduck.com/blog/motherd...
motherduck.com
MotherDuck Now Speaks Postgres
MotherDuck's Postgres endpoint lets you query your data warehouse using any PostgreSQL-compatible client, driver, or BI tool — no new dependencies needed. | Reading time: 4 min read
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Jelte Fennema-Nio @jeltef.nl · 17/10/2025
I'm now officially a Major Contributor of Postgres: www.postgresql.org/community/co...
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Jelte Fennema-Nio @jeltef.nl · 12/06/2025
I did a talk about the main project I've been working on for the past year: "pg_duckdb". So if you're curious what that is, give it a watch: youtu.be/0kc-W5o0tcg #posetteconf
youtu.be
pg_duckdb: Ducking awesome analytics in Postgres | POSETTE: An Event for Postgres 2025
YouTube video by Microsoft Developer
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Jelte Fennema-Nio @jeltef.nl · 08/05/2025
Just finished recording my talk for POSETTE about pg_duckdb. You can watch the live stream together with me on June 11th. Because it's recorded I'll be able to constantly answer questions during the stream. More info: posetteconf.com/2025/talks/p...
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Jelte Fennema-Nio @jeltef.nl · 13/02/2025
pg_duckdb 0.3 was just released! Major features include: Support for using PG indexes, a much easier syntax for querying parquet/csv/iceberg files in blob storage, and last but not least: ✨A shiny new logo✨ Changelog at: github.com/duckdb/pg_du...
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Reposted by Jelte Fennema-Nio
MotherDuck @motherduck.com · 21/01/2025
Crunching too many numbers inside your Postgres database? Is it crawling along while doing analytics? Use pg_duckdb to power the elephant with the duck. Learn more from contributor @jeltef.nl in this interview on a podcast by @thegeeknarrator.bsky.social. www.youtube.com/watch?v=Qn9_...
youtube.com
Power of #Duckdb with Postgres: pg_duckdb
YouTube video by The Geek Narrator
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Jelte Fennema-Nio @jeltef.nl · 10/01/2025
PgBouncer 1.24.0 is out, with many improvements. And prepared statement support is now turned on by default! github.com/pgbouncer/pg...
github.com
Release PgBouncer 1.24.0 · pgbouncer/pgbouncer
2025-01-10 - PgBouncer 1.24.0 - "New year, new bouncer" Features Add support for Type=notify-reload for systemd. This requires systemd version 253 or later. (#1148) Add KILL_CLIENT command t...
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Jelte Fennema-Nio @jeltef.nl · 10/12/2024
pg_duckdb v0.2.0 is out! Now with Delta Lake, JSON and Azure support: github.com/duckdb/pg_du...
github.com
Release v0.2.0 · duckdb/pg_duckdb
Added Support for reading Delta Lake storage using the duckdb.delta_scan(...) function. (#403) Support for reading JSON using the duckdb.read_json(...) function. (#405) Support for multi-statement...
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Jelte Fennema-Nio @jeltef.nl · 05/12/2024
I gave a lightning talk about pg_duckdb at PGConf.EU. You can watch the recording here: www.youtube.com/watch?v=ogvb...
youtube.com
Lightning Talks (PGConf.EU 2024)
YouTube video by PostgreSQL Europe
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Jelte Fennema-Nio @jeltef.nl · 21/11/2024
I noticed that Q28 of ClickBench ran much slower when I ran it manually, than when running it with the provided benchmark scripts. Turned out Q28 was run incorrectly for pretty much every system measured by ClickBench: github.com/ClickHouse/C...
github.com
Fix running of Q28 by not removing important backslashes from regex by JelteF · Pull Request #252 · ClickHouse/ClickBench
Q28 contains backslashes, specifically the backslash in \1 is very important for the meaning of the query. However, both backslashes in this query are accidentally removed in almost all benchmark s...
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