Hannes Mühleisen
@hannes.muehleisen.org
I like databases and boats. Co-creator of @duckdb.org, Co-Founder and CEO DuckDB Labs.
Announcing datafusion-ducklake-provider, an open source Rust crate for reading and writing DuckLake tables through @apache.org DataFusion. - Full read and write support - Multiple catalog backends: SQLite, DuckDB, Postgres, Quack - Much much more 😀 github.com/tobilg/dataf...
GitHub - tobilg/datafusion-ducklake-provider
Contribute to tobilg/datafusion-ducklake-provider development by creating an account on GitHub.
github.com
Traditional databases were "sold on the golf course" — to purchasing departments, not developers. @hannes.muehleisen.org on how that blind spot created the gap between pandas and Spark that @duckdb.org walked right into. Episode link below
Missed out on attending #DuckCon in Amsterdam or via the livestream? 🦆📺 Don’t worry, you can still catch up with all the news and roadmap announcements from “The State of the Duck” keynote right here: Video: www.youtube.com/watch?v=iFPK... Slides: blobs.duckdb.org/events/duckc... #DuckDB
🦆 There's only one week to go until DuckCon #7 in Amsterdam! We are all hyped to meet the flock and learn about the latest cool use cases from our community. As always, the event will feature the “State of the Duck” talk from DuckDB's co-creators.
Today, we are releasing DuckDB v1.4.5 and v1.5.4. Yes, we know – these version numbers can be a bit confusing! That's why we wrote two blog posts this time. The thread helps you pick the right one 🧵
I built a SQL trainer that runs entirely in the browser: DuckDB-WASM, no backend. Nine lessons from SELECT to window functions and EXPLAIN, each with exercises graded against a reference solution. Static site on GitHub Pages oluies.github.io/sql-concepts...
SQL Concepts Lab — DuckDB-WASM
Interactive SQL concepts trainer running DuckDB-WASM entirely in the browser.
oluies.github.io
When the sea lion learns to quack: #DuckDB now swims into #MariaDB 🦭🦆 mariadb.org/duckdb-stora...
DuckDB Storage Engine for MariaDB. When the Sea Lion Learns to Quack. - MariaDB.org
An early look at the DuckDB storage engine for MariaDB — columnar, vectorized analytics that live right next to your transactional tables. The problem MariaDB’s InnoDB is excellent at what it was buil...
mariadb.org
What's new in DuckDB and how does DuckDB fit into old shell scripts? These are topics that our DevRel Gábor covered at Ubuntu Summit 2026. His talk explained three aspects of DuckDB: a command-line tool, a portable database, and a client-server database. duckdb.org/library/duck...
#DuckDB has announced Quack - a new remote protocol over HTTP that enables multiple DuckDB instances to connect to and work with the same database across a network. Quack brings client-server capabilities to a database that has traditionally been local and embedded. 🔗 bit.ly/4o22y0i #InfoQ #AI
DuckDB Labs becomes DuckLabs. We ended up working on more than DuckDB, i.e., DuckLake and most recently, Quack. It was time to change the company name to reflect this. Nothing else changes – read our blog post for more details. ducklabs.com/news/2026/05...
This week we released an ADBC driver for Quack, @duckdb.org’s new native client-server protocol. Now you can query remote DuckDB servers using the same ADBC interface you already use for local DuckDB across 7+ languages—no third-party server extensions required. columnar.tech/blog/quack-a...
Announcing an ADBC driver for Quack
A public preview of a driver for DuckDB’s new client-server protocol
columnar.tech
DuckCon #7 is coming up and we're looking for sponsors. We have a lineup of 15 speakers, sharing their experiences with DuckDB. For the first time, the talks will also cover DuckLake and Quack. Check out the sponsorship packages on the conference site, duckcon.org
A while back the DuckDB Labs team started a collaboration with LanceDB to bring you an extension that interacts with the Lance lakehouse format from DuckDB. In this post we take the extension for a test drive! duckdb.org/2026/05/21/t...
Test-Driving the Lance Lakehouse Format in DuckDB
Lance is an open lakehouse format with a design geared toward AI workloads. LanceDB and DuckDB Labs have partnered to bring you fast vector and hybrid search directly from DuckDB SQL, without leaving ...
duckdb.org
Today, we are releasing DuckDB v1.5.3. This is not an ordinary patch release – it packs many new features for the Quack client-server protocol, Quack support for DuckLake, and big updates for AWS, HTTPS and Iceberg. Check out our blog post about all these changes and improvements – link in the 🧵.
Im Interview erklärt Hannes Mühleisen, CEO von DuckDB Labs, wie sich die DuckDB von SQLite for Analytics zu einem universellen Datenwerkzeug entwickelt hat. #Datenbanken
Mitschöpfer von DuckDB: "Es war klar, dass eine neue Architektur notwendig ist"
Im Interview erklärt Hannes Mühleisen, CEO von DuckDB Labs, wie sich die DuckDB von SQLite for Analytics zu einem universellen Datenwerkzeug entwickelt hat.
heise.de
Power BI with DuckDB, 4 years later 600 M rows under 4 seconds in Direct Query mode ( warm run) datamonkeysite.com/2026/05/19/p... #onelake #apacheiceberg #PowerBI #duckdb #PowerQuery #ADBC
Power BI with DuckDB, 4 years later
Four years ago I wrote a blog about using DuckDB with Power BI in DirectQuery. It got a fair number of likes on LinkedIn :) along with the one comment I didn’t want to hear: how does this wor…
datamonkeysite.com
This Tuesday, Hannes announced Quack, our new protocol that turns DuckDB into a client-server database. Watch his talk, recorded at the AI Council, where he explained how Quack works in practice, what stack it's built on, how it performs, and what our long-term ambitions are. youtu.be/L_lttD-d1wc
DuckDB-Quack announcement at AI Council
YouTube video by DuckDB
youtube.com
Today we are revealing the Next Big Thing for DuckDB: Quack, a protocol that turns DuckDB into a client-server database. True to DuckDB's philosophy, Quack is simple and fast. Setting it up takes seconds, and it works for both bulk operations and small write transactions. 🔗 duckdb.org/quack
The Delta and Unity Catalog extensions in DuckDB have shed their experimental labels! Today's blog post by Ben Fleis presents there features: ✍️ Write Delta tables 🤝 Multi-writer access with concurrency control through UC ⏪ Time travel queries on Delta tables Read more: duckdb.org/2026/05/07/d...
Delta Grows Up: Writes, Unity Catalog and Time Travel
DuckDB's Delta and Unity Catalog extensions shed their experimental tags — now with writes, Unity Catalog and time travel support.
duckdb.org
"We have a database and we're not afraid of using it." How DuckDB tackled the small changes problem in lakehouse design. www.theregister.com/2026/04/16/d...
DuckDB uses RDBMS to tackle lakehouse 'small changes' issue
: Batching teensy changes in chunks creates massive performance boost, DuckDB Labs team claims
theregister.com
I've been working on this over the last few months and in my opinion it is just beyond cool. Grammar of graphics for SQL users!
Thomas Lin Pedersen@thomasp85.com · 4mo agoI am excited beyond description to lift the veil on what we have been working on in 2026: Please meet ggsql! A new extension of the SQL language for creating visualisations using the grammar of graphics. Read all about it in the blog post or visit the website at ggsql.org
We are hosting the next edition of our community conference, DuckCon, in Amsterdam on June 24. The registration is already open and you can submit your talk proposals until next Wednesday. Looking forward to your submissions and seeing the flock in the summer!
The Register published a report on DuckLake v1.0 and cited our recent post: > In a blog post accompanying the 1.0 launch, Pedro Holanda, DuckDB Labs principal engineer, said the company's benchmark shows 926× faster queries and 105× faster ingestion when compared to Iceberg, the open table format.
The Register@theregister.com · 4mo agoDuckDB uses RDBMS to attack classic 'small changes' problem in lakehouses
DuckDB uses RDBMS to attack classic 'small changes' problem in lakehouses
DuckDB uses RDBMS to attack classic 'small changes' problem in lakehouses
Batching teensy changes in chunks creates massive performance boost, DuckDB Labs team claims The team behind in-process OLAP database DuckDB has put forward a solution to the "small changes" problem that they say plagues lakehouse implementations of the kind based on technologies from Databricks, Snowflake, Google, and others.…
go.theregister.com
We heard that a specification looks more serious if it's served as a PDF. Well, you can read the DuckLake documentation as a PDF now (blobs.duckdb.org/docs/ducklak...)! This document covers both the specification and the DuckDB extension's usage.
Yesterday, we released DuckLake v1.0 and also published a podcast where Pedro Holanda and Mark Raasveldt talk about the DuckLake, going into quite some technical details. Listen to the episode at ducklake.select/media/duckla...
DuckLake v1.0 – Developer Discussion
DuckLake is a SQL-as-a-lakehouse format that leverages your favorite SQL database (SQLite, PostgreSQL or DuckDB) to provide ACID transactions, schema evolution, and time travel for your data lake, wit...
ducklake.select
We are happy to release DuckLake v1.0, a production-ready lakehouse format specification. Its reference implementation, the ducklake DuckDB extension, is available as of today in DuckDB v1.5.2. For more details, read the announcement blog post: ducklake.select/2026/04/13/d...
DuckLake v1.0
We are happy to release DuckLake v1.0, a production-ready lakehouse format specification. Its reference implementation, the ducklake DuckDB extension, is available as of today in DuckDB v1.5.2.
ducklake.select
You have to really love something to write a book about it. DuckLake makes PB-scale lakehouses simple: Postgres, Object Storage, DuckDB, & 6 lines of SQL. Chapter 1 of the @oreilly.bsky.social book I'm co-authoring just dropped - download for free at this link! motherduck.com/lp/ducklake-...
DuckLake The Definitive Guide — Free O'Reilly Book
A comprehensive O'Reilly guide to the open table format that replaces file-based metadata with SQL databases. Free early access for data engineers and platform teams.
motherduck.com
