Sam Arch 🇦🇺

PhD Student in Databases @CMUDB with @andy_pavlo, Previously a Compiler Engineer @apple

[VLDB 2026 @VLDBconf]

🧵Congrats to the #VLDB2025 award winners at @VLDBconf (London)! 🏆
• Best research papers: “Diva” (@niv_dayan @UofT + @KTHuniversity) & “AnyBlox” (@JanaGiceva @tum_db)
• Runner-up: “The Key to Effective UDF Optimization” by @CMUDB @andy_pavlo @pateljm

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

The latest paper from the #1 CMU-DB PhD student @SamArchDB's is wild compilation DB magic! He automatically makes UDFs run 300x faster on @SQLServer and 1.3x faster on @duckdb.

Code: https://t.co/Fm9n1qY8xu
Paper: https://t.co/uoFKfUcVxJ

[PVLDB @pvldb]

Vol:18 No:1 → The Key to Effective UDF Optimization: Before Inlining, First Perform Outlining https://t.co/dCl3qhCytr

[Darling Data @erikdarlingdata]

https://t.co/YxBC384DO2
by @SamArchDB

[Sam Arch 🇦🇺 @SamArchDB]

@erikdarlingdata @wiscdb @GraySystemsLab @uw_db Hi Erik, VLDB still needs to post the paper on its website. In the meantime, you can check out a recording of my talk for NYC Systems.

https://t.co/eBcD7WNzI1

[Sam Arch 🇦🇺 @SamArchDB]

The UDF world tour continues. This week, I'm stopping at UW Madison, Microsoft's Gray Systems Lab, and The University of Washington. See you all there.

10/24 @wiscdb
10/25 @GraySystemsLab
10/25 @uw_db

[Sam Arch 🇦🇺 @SamArchDB]

I am flying to the Bay Area to give talks about my new VLDB 2025 paper on UDFs with @andy_pavlo and @pateljm. With our new technique (UDF outlining), queries run up to 1000× faster than FROID. The paper will drop soon.

9/10 @databricks
9/11  @UCBerkeley
9/12 #HTAPSummit2024

[Sam Arch 🇦🇺 @SamArchDB]

I am flying to the Bay Area to give talks about my new VLDB 2025 paper on UDFs with @andy_pavlo and @pateljm. With our new technique (UDF outlining), queries run up to 1000× faster than FROID. The paper will drop soon.

9/10 @databricks
9/11  @UCBerkeley
9/12 #HTAPSummit2024

[Chris Lattner @clattner_llvm]

This speaks to me: it’s the essence of building hard things that take time to have impact, but then matter in a big way - you have to love the process, not just the outcome!

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

VLDB'24 Paper #1: Collecting training data for ML models with DBs is $$$/slow. @wanshenl's Boot framework uses @PostgreSQL extensions to cutoff redundant queries. Offline training goes from weeks to hours!
• Code: https://t.co/4l090D8bZP
• Paper: https://t.co/UknkjMScr9

[Phil Eaton @eatonphil]

Video of @SamArchDB 's talk from NYC Systems August 2024 is now up!

Dear UDFs, I Broke Up With You, But Now I'm Ready To Give You A Second Chance. Will You Take Me Back? Sincerely, SQL

https://t.co/dy4SgltA6t

[Jonathon Belotti @jonobelotti_IO]

🇦🇺s incoming

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

@_TylerHillery We have three more bombs dropping this month from @lmwnshn + @SamArchDB + William Zhang. @abigale_kim just submitted her VLDB paper last week too. It's going to be a blow out year.

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

It took three years to finish, but our follow-up to the 2006 "What Goes Around Comes Around" is finally out! Stonebraker and I examine the last 20 years in databases and discuss why relational databases + SQL will continue to remain on top.

📄PDF: https://t.co/ZwTWSxXLWb

[DuckDB @duckdb]

We are proud to release the first major version of DuckDB, v1.0.0, codenamed "Snow Duck".

This version is a culmination of almost six years of research and development. Today we are shipping an innovative database system with a backwards-compatible storage format.

Check out our announcement blog post: https://t.co/w8OGx4pziT

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

Here is a short video from my recent interview with @SCSatCMU's media team on the one year anniversary of the infamous @Jeopardy "matrix" scandal: https://t.co/iXrvp8gS5o

[Abigale Kim (@abigalekim.bsky.social) @abigale_kim]

I am excited to announce that I will start my PhD in database systems at @wiscdb and work with @xiangyao_yu beginning Fall 2024! I'm super grateful to everyone who has supported me along the way :)

[Andy Pavlo (@andypavlo.bsky.social) @andy_pavlo]

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.