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Hannes Mühleisen

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Columnstore RevolutionPercona Live Amsterdam 20262026-09-09
ClickHouse claims to handle billions of daily clickstream rows and delivers two orders of magnitude faster analytic scans than legacy MySQL, powering…
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State of the DuckDuckCon #7 Amsterdam 20262026-06-24
DuckDB reports over 1 million installs/day and 160 million extension installs/month, and DuckLake reaches DuckLake 1.0 in one year alongside a new Quack…
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KEYNOTE: Data Architecture Turned Upside DownPyData Amsterdam 20252025-09-24
Claim: flip the stack so compute moves to clients while storage and metadata stay commoditised. Concrete evidence: count distinct on a billion rows in 46s on a…
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Data wrangling like a boss with DuckdbDevworld Conference 20252025-02-27
Claims that DuckDB reads a messy CSV of 34 million rows and six columns in seconds, summarizes it, and converts the 800 MB CSV to a 75 MB parquet in one…
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Welcome and opening remarksDuckCon #62025-01-31
Conference opens with the first live stream of DuckCon, announces Slido QR for audience questions, and lists concrete product metrics: 32 million extension…
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Changing Data With Confidence using DuckDBPyData Global 20242024-12-03
DuckDB provides ACID all-or-nothing semantics so updates either fully commit or automatically roll back on error or crash; a demo shows a failed insert undone…
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DuckDB – Overview and latest developmentsDuckCon #5 (Seattle, 2024)2024-08-15
DuckDB reports concrete growth and engineering work: 6M monthly Python downloads and the extensions ecosystem at 17M monthly installs. The 1.0 release ships…
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Data Wrangling [for Python or R] Like a Boss With DuckDBposit::conf(2024)2024-08-12
DuckDB runs in process with zero dependencies and parses messy files faster than a server workflow so an 857 MB New Zealand census CSV with 34 million rows…
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Keynote Day 2 - FullData + AI Summit 20242024-06-10
Announces include Uniform GA with 4+ exabytes loaded and Delta processing cited at ~9 exabytes, plus a 73% BI performance uplift over two years; DuckDB adds…
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Announcing DuckDB Support for Delta Lake and a DuckDB Extension to Unity CatalogData + AI Summit 20242024-06-10
Announces DuckDB 1.0 with a stable SQL dialect and a backwards‑compatible storage format, plus official Delta Lake support that reads Delta tables with zero…
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A Short Summary of the Last Decades of Data ManagementGOTO Amsterdam 20242024-06-10
Claim: relational systems keep winning and will "eat" key value, time series, vector and many other niches. Evidence: DuckDB 1.0 released, TPC‑H SF100…
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State of the DuckDuckCon #42024-02-02
Release v0.10.0 ships within weeks and the project plans a snow‑leopard style v1.0 focused on stability, backed by 5 million extension installs/month and about…
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In-Process Analytical Data Management with DuckDBposit::conf(2023)2023-09-17
DuckDB is an in-process analytical engine that runs SQL directly on R data frames with no serialization, showing a 10 million‑row load into Postgres taking…
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IntroDuckCon #32023-06-29
First US event lands in San Francisco for DuckCon with a status update on building a database framed as “a very stupid idea” that will take ten years, a…
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State of the DuckDuckCon #2 20232023-02-03
Progress report on storage, execution, and adoption: the project ships persistent ART indexes, parallel bulk loading and many new compression codecs that…
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