#udfs
there's some more to do here in the repo to get it where i want, but will probably write a leaflet soon on making moderation work for people that are not Bluesky PBC. hoping that this will be a good step in that direction.
GitHub - bluesky-social/osprey-atproto: A set of packages, UDFs, and rules to use Osprey with ATProto
A set of packages, UDFs, and rules to use Osprey with ATProto - bluesky-social/osprey-atproto
github.com
October 3, 2025 at 12:43 AM
Who else is using @roost.tools’ Osprey for moderation on ATProto? Would there be interest in some sort of shared repo for UDFs and Plugins?
September 25, 2026 at 12:22 PM
The latest paper from the #1 CMU-DB PhD student @samarchdb.bsky.social is wild compilation magic! He automatically makes UDFs run 300x faster on SQL Server and 1.3x faster on DuckDB.
Code: github.com/SamArch27/PR...
Paper: www.vldb.org/pvldb/vol18/...
December 6, 2024 at 2:56 PM
This Sunday I'm honestly grateful for UDFs in the Cincinnati area. Good coffee, good donuts, they're always clean, the people who work there are goofy and fun, and you can get a mean chocolate malted on a hot day. A good gas station is an oasis, and a UDF is a good gas station.
March 1, 2026 at 3:37 PM
Talk #17: "AquaLang: a streaming dataflow programming language" by Klas Segeljakt
February 4, 2025 at 2:00 AM
oh that clicker oh i udfs-gfodhjbdgkfhnsjhgfdfnbhjgbjkhfdjkfnbkhjbjhdhjsjhfdbxvc
I hate my voice when Im trying to be sexy so I hope you enjoy hehe it took a lot
March 12, 2025 at 8:35 PM
Watch a 30-minute chat with Jay recorded at FabCon25 Europe this week.
@jaypowerbi.sky.social is the product manager of DAX.

We talk about the new features just released: User-defined functions (UDFs) and Calendar-based time intelligence.

#dax #fabconeurope25

DAX UDFs and Calendar-based time intelligence: A chat with Jay
Here is a chat with Jeroen (Jay) ter Heerdt, the product manager for DAX, talking about the new features released today: User-defined functions (UDFs) and Ca...
youtu.be
September 20, 2025 at 8:16 AM
Excited to announce SedonaDB 0.2.0! Highlights include reading spatial file formats via GDAL/OGR, improved GeoParquet IO, Python @arrow.apache.org UDFs, and 40+ additional functions.
December 9, 2025 at 8:03 PM
Since multiple people asked, @samarchdb.bsky.social's research doesn't really work well on Postgres because it has one of the worst query optimizers we've tested (sorry it's true). It cannot decorrelate subqueries needed to inline UDFs. See Sam's CIDR 2024 paper: db.cs.cmu.edu/papers/2024/...
December 7, 2024 at 3:10 AM
Calendars, udfs... You are in a roll 😀
October 7, 2025 at 11:08 AM
I had no idea you could do fluent Python programming with duckdb. Or row and batch UDFs, for that matter.
duckdb.org DuckDB @duckdb.org · May 16
New blog post by Petrica Leuca:
Machine Learning Prototyping with DuckDB and scikit-learn

In this blog post, we build a random forest classifier for penguins using scikit-learn and show how to use it for inferencing on a DuckDB dataset.

duckdb.org/2025/05/16/s...
May 17, 2025 at 1:50 PM
I wrote a little article on Power BI User Defined Functions and a little use case you might find useful.

Reference Tables and Columns in UDFs
www.linkedin.com/pulse/simpli...
Reference Tables and Columns in UDFs
It's time to make your Power BI Semantic Models easy to update, easy to develop, and ensure all measures conform to established business logic. You can use UDFs to help! UDFs are a very useful feature...
www.linkedin.com
October 16, 2025 at 5:30 AM
This is pretty cool: UDFs went into #PowerBI yesterday; and today I'm using them in a non-trivial manner in an actual report.

@jaypowerbi.bsky.social Good job if this is you.
Wait a minute...I *can* pass in a column ref. Meaning I can write a generic DynamicFormatting function that lets users choose whether they want to display values or % of column.

And that is pretty cool.

I better submit this to your repository, @marcorus.bsky.social
September 18, 2025 at 12:00 AM
Are you a Spark user who prefers writing in R? User-defined functions with sparklyr might be what you need ✨

With `spark_apply()`, you can write functions in #RStats and use them in #Spark queries.

Learn more in the blog post: posit.co/blog/databri...
Parallelize R code using user-defined functions (UDFs) in sparklyr - Posit
The sparklyr package enables writing user-defined functions (UDFs) in R, which allow you to leverage Spark for efficient big data processing.
posit.co
August 1, 2024 at 1:55 PM
Probably DAX UDFs will fill this gap
May 20, 2025 at 5:05 AM
Calling DAX UDFs from #PowerBI Copilot blog.crossjoin.co.uk/2025/11/09/c...
Calling DAX UDFs from Power BI Copilot
An example showing how Copilot can call a DAX UDF that does ABC analysis
blog.crossjoin.co.uk
November 9, 2025 at 2:35 PM
Number Of Functions Matters!! (I mean... DAX UDFs) @jaypowerbi.bsky.social.

Model: 1 Table, 1 Row, 1 Measure
First run: 1011 UDFs
Second run: 20011 UDFs

Their DAX code is straightforward:
(x int64) => x
September 22, 2025 at 7:33 AM
300x faster UDFs in SQL Server? Pretty impressive!

Its funny bc I've written about a similar pattern here: www.dataduel.co/optimizing-s...

(dbt lets you break large functions into to small parts to be executed parallel)
The latest paper from the #1 CMU-DB PhD student @samarchdb.bsky.social is wild compilation magic! He automatically makes UDFs run 300x faster on SQL Server and 1.3x faster on DuckDB.
Code: github.com/SamArch27/PR...
Paper: www.vldb.org/pvldb/vol18/...
December 6, 2024 at 3:51 PM
This made my day today.

User: Btw, you guys also support Python UDFs
Me: we support what now? (we only have Rust UDFs)
User: you can interpret Python with RustPython right as a UDF [which let's them use their internal python code as is]
Me: 🤯 🤯 🤯
May 29, 2025 at 3:49 PM
June 12 in Zagreb: I'm running my full-day Advanced T-SQL Triage workshop as a pre-con for Data Saturday Croatia. MERGE misuse, JOIN pitfalls, broken paging, scalar UDFs that wreck plans — the whole tour.
Workshop: events.3nf.hr/Seminar.aspx...
Erik Darling - Advanced T-SQL Triage: The Art of Fixing Terrible Code | 3NF Events
events.3nf.hr
May 4, 2026 at 12:02 PM
User-Defined Fuctions in Power BI ✌🏻
Build once. Reuse everywhere.

Join the developers who’ve already made the switch (Link below) 🚀

#udfs #data #analytics
September 23, 2026 at 9:34 AM
In @convex.dev the UDFs are just JavaScript. (oh you said DX?TypeScript!)

All queries are prepared statements, it's all pushed ahead of time so it's all stored procedures.
December 28, 2024 at 5:50 AM
オスプレイ (osprey) は、使っているライブラリの名前から来てるようだ
github.com/bluesky-soci...
GitHub - bluesky-social/osprey-atproto: A set of packages, UDFs, and rules to use Osprey with ATProto
A set of packages, UDFs, and rules to use Osprey with ATProto - bluesky-social/osprey-atproto
github.com
September 17, 2025 at 3:24 AM