Hannes Mühleisen @hfmuehleisen
I like databases. Co-creator of @duckdb, Co-Founder and CEO @duckdblabs. Professor of Data Engineering @Radboud_Uni hannes.muehleisen.org Amsterdam Joined April 2010-
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Remote DuckDB files!
Did you know that you can connect to a DuckDB database file via HTTPS or S3 with just two SQL statements? We have a new guide that explains how to do this. duckdb.org/docs/guides/ne…
Looking forward to my keynote at #PyConDE / #PyDataBerlin tomorrow morning - will be talking about “Creating Software like @duckdb in Academic Institutions” @PyConDE - happy to chat about anything DuckDB, just find me, this is what I look like
Wanted to analyze a 22GB csv file at work. I am used to unix pipes with sed, cut, etc. Reached for @duckdb this time. So fast. Feels like playing around with a small text file. The repl is excellent. Could also (zstd) compress it to a 1.4GB parquet file with no performance loss.
In my talk, I will discuss DuckDB, its origins, and the unique benefits and challenges of maintaining popular software in an academic setting. at #PyConDE #PyDataBerlin 2024.pycon.de/program/HKFN8J/
*remembers DuckDB has a wasm shell* You can dive into your PBIX files directly from your tab - no installs needed. Just add SQL #duckdb #wasm
I wish more library maintainers would follow a (close to) zero dependencies policy. Libs should never depend on stuff like Guava, kotlin-stdlib, or logger implementations. Yes, it means less comfort for yourself, but your users will be grateful.
We invite our community to submit talk proposals until April 29. We especially encourage members of underrepresented groups to share their DuckDB-related projects. Please use the form at forms.gle/RgFazaawkfx9YK…
My #1 PhD student @butro successfully completed his PhD defense. Thanks to the committee (@pateljm @justinesherry @samrmadden). Matt's thesis is on accelerating databases with eBPF (telemetry, proxies, OLTP stores). You have 60 days to hire him. Expect fierce competition.
This is not a drill! @duckdb DuckCon will immediately follow @posit_pbc conf in Seattle this August Two back to back conferences with some of the most genuine, non-gimmicky, open source data communities out there
This is not a drill! @duckdb DuckCon will immediately follow @posit_pbc conf in Seattle this August Two back to back conferences with some of the most genuine, non-gimmicky, open source data communities out there
Save the date: DuckCon #5 will take place in Seattle on 2024-08-15. For details and the registration link, see duckdb.org/2024/08/15/duc…
Converted 28 million rows of data from csv to parquet with @duckdb It took about 5 minutes including writing and running the script with no prior experience. I wasted about an hour trying to script this in node without it going oom a few nights ago
Ever wondered how #duckdb can read CSV files so fast? Last Friday we had an excellent talk from @holanda_pe from @duckdblabs about efficient CSV parsing and all the complexities that come with it in #duckdb. Missed it? Check out the recording! 🎥youtu.be/YrqSp8m7fmk
The report of our @dagstuhl seminar on "Ensuring the Reliability and Robustness of Database Management Systems" is online! All attendees collaboratively wrote it during the seminar, so don't expect it to be polished, but hopefully it is still insightful! drops.dagstuhl.de/storage/04dags…
Woop Woop, my presentation on DuckDB's CSV reader is out! In the presentation, I go over the history of different implementations, their performances, talk about pitfalls, and show some PTSD-triggering files. As a good millennial, I filled the presentation with memes! 😁
Woop Woop, my presentation on DuckDB's CSV reader is out! In the presentation, I go over the history of different implementations, their performances, talk about pitfalls, and show some PTSD-triggering files. As a good millennial, I filled the presentation with memes! 😁
Hi DuckDB community! We are hosting an informal pub session with @hfmuehleisen in Berlin on 2024-04-22 (Monday) starting at 8PM near U Oranienburger Tor. We only have 10 seats available – if you are interested in participating, please send an email with the subject “DuckDB…
The DuckDB v0.10.1 R library is available on CRAN: cran.r-project.org/web/packages/d…
New blog post by @hfmuehleisen duckplyr: dplyr powered by DuckDB The post describes the new R package duckplyr, which translates the dplyr API to DuckDB’s execution engine. Read more at duckdb.org/2024/04/02/duc…
This blog post is a short summary of the ICDE 2024 (@icdeconf) paper authored by @lnkuiper, @peterabcz, and @hfmuehleisen: Robust External Hash Aggregation in the Solid State Age. The paper is available at hannes.muehleisen.org/publications/i…
This blog post is a short summary of the ICDE 2024 (@icdeconf) paper authored by @lnkuiper, @peterabcz, and @hfmuehleisen: Robust External Hash Aggregation in the Solid State Age. The paper is available at hannes.muehleisen.org/publications/i… https://t.co/8rZD1eNsUt
DuckDB Labs is proud to sponsor @icdeconf 2024, where the algorithm that powers @duckdb's latest larger-than-memory aggregation feature will be presented. The paper is co-authored by @lnkuiper, @peterabcz, and @hfmuehleisen. See you in Utrecht!
DuckDB Labs is proud to sponsor @icdeconf 2024, where the algorithm that powers @duckdb's latest larger-than-memory aggregation feature will be presented. The paper is co-authored by @lnkuiper, @peterabcz, and @hfmuehleisen. See you in Utrecht!
Andy Pavlo (@andy_pav.. @andy_pavlo
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8K Followers 4K Following CEO, https://t.co/U7uKl4r9iE Cofounder, https://t.co/i9QX6JxCBa Ex: MSFT, K8s, Kubeflow, GOOG, AMZN. 4x founder/CEO. There is many a worse and more elaborate life. He/himPatrick Chase @patrickachase
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VC backed CEO math Conference sponsorship: $75k Travel expenses: $22k Apple Vision Pro giveaway: $4k Custom booth: $60k Results: 12 new free plan users.
@rbatiati Is that a @TigerBeetleDB logo on the back? 😎
If you are a grant agency looking for grant reviewers for grants paying out millions, you should use a little of that money to compensate your reviewers.
Today I’m excited to share a little about the new company I’ve been working on: Gestalt is the best way for businesses to deeply understand people. In many ways, I view Gestalt as a Human Data Interface — a new kind of tool that reimagines how we think about data as humans,…
wildly excited to support @willium in the continuation of his life's work 🫡 @GestaltHDI is the best way for businesses to deeply understand people check out gestalt.com to learn more!
Today I’m excited to share a little about the new company I’ve been working on: Gestalt is the best way for businesses to deeply understand people. In many ways, I view Gestalt as a Human Data Interface — a new kind of tool that reimagines how we think about data as humans,…
@samansmink is doing some really excellent work in making the whole extension building/publishing process smooth. He created a templated extension repo and keeps updating it with scrips and CI magic to streamline the whole process. github.com/duckdb/extensi…
Just updated Scrooge to DuckDB 0.10. Scrooge is a financial extension + eat-your-own-dog-food kind of thing where I get to try our extension-template, suffer from breaking changes and s3 releases. I must say the current extension template is pure bliss! github.com/pdet/Scrooge-M…
Congratulations @kavehrazavi for receiving the @EurosysConf Jochen Liedtke Young Researcher Award! 🎉🎉🎉 Well deserved!
And we celebrated the 500th promotion chaired by prof. Peter van Emde Boas. What a milestone! . Thanks from @UvA_IvI! I’m sure many here on Twitter/x had him as chair during their defense.
WhatTheDuck is an open-source web application built on DuckDB. It allows users to upload CSV files, store them in tables, and perform SQL queries on the data. #GitHub link : github.com/incentius-foss… #WhatTheDuck #OpenSource #SQL
Excited that Jack's work received a Best Paper Award at @EurosysConf! Thanks to the committee for appreciating the work. dl.acm.org/doi/pdf/10.114…
After an exciting ICSE, I'm now looking forward to attending #EuroSys24 next week! Jack Clark will present his work on "Validating Database System Isolation Level Implementations with Version Certificate Recovery." Work with @afd_icl and @wicko3. dl.acm.org/doi/10.1145/36…
Love these fun aggregate functions from ClickHouse, DuckDB, Trino: MIN_BY(), MAX_BY(): github.com/jOOQ/jOOQ/issu… jOOQ 3.20 will support them, and emulate them in other RDBMS using: - KEEP in Oracle - ARRAY_AGG() in PostgreSQL and elsewhere
TUMuchData event with @peterabcz of @motherduck is about to start!
Incredible Day 2! 🌟 Two inspiring keynotes, book signing session, connection-building PyLadies lunch, captivating lightning talks, and a social event that was an absolute blast! 🎉 Thanks to everyone for making it unforgettable! 💼📚🍽️ #PyConDE #PyDataBerlin #Python #community
Major milestone! 🙌🎊 Delta Lake has officially surpassed 20 million downloads per month! A huge thank you to our dedicated community. Together we have made Delta Lake the most widely used #lakehouse format in the world! 🌎
🌟 Excited to have Hadley Wickham (@hadleywickham), Chief Scientist at Posit, speaking at NY R Conference 2024! Dive into the evolution of data science and discover future trends with one of the pioneers in R programming. #NYR2024 #RStats rstats.ai/nyr.html