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IBM AI ('Bob') Downloads and Executes Malware

https://www.promptarmor.com/resources/ibm-ai-(-bob-)-downloads-and-executes-malware
121•takira•1h ago•56 comments

Bose is open-sourcing its old smart speakers instead of bricking them

https://www.theverge.com/news/858501/bose-soundtouch-smart-speakers-open-source
1548•rayrey•4h ago•247 comments

Fixing a Buffer Overflow in Unix v4 Like It's 1973

https://sigma-star.at/blog/2025/12/unix-v4-buffer-overflow/
24•vzaliva•1h ago•1 comments

The Jeff Dean Facts

https://github.com/LRitzdorf/TheJeffDeanFacts
293•ravenical•6h ago•105 comments

Iran Goes Into IPv6 Blackout

https://radar.cloudflare.com/routing/ir
230•honeycrispy•3h ago•140 comments

Google AI Studio is now sponsoring Tailwind CSS

https://twitter.com/OfficialLoganK/status/2009339263251566902
79•qwertyforce•44m ago•12 comments

The Unreasonable Effectiveness of the Fourier Transform

https://joshuawise.com/resources/ofdm/
7•voxadam•53m ago•0 comments

Ushikuvirus: Newly discovered virus may offer clues to the origin of eukaryotes

https://www.tus.ac.jp/en/mediarelations/archive/20251219_9539.html
13•rustoo•15h ago•0 comments

Digital Red Queen: Adversarial Program Evolution in Core War with LLMs

https://sakana.ai/drq/
38•hardmaru•3h ago•4 comments

Claude keeps nagging about "Help improve Claude" inspite of previous decline

24•onesandofgrain•46m ago•13 comments

Lights and Shadows (2020)

https://ciechanow.ski/lights-and-shadows/
203•kg•6d ago•28 comments

Tamarind Bio (YC W24) Is Hiring Infrastructure Engineers

https://www.ycombinator.com/companies/tamarind-bio/jobs/HPRZAz3-infrastructure-engineer
1•sherryliu987•2h ago

I used Lego to design a farm for people who are blind – like me

https://www.bbc.co.uk/news/articles/c4g4zlyqnr0o
66•ColinWright•3d ago•9 comments

Ask HN: Is it time for HN to implement a form of captcha?

27•Rooster61•54m ago•29 comments

Project Patchouli: Open-source electromagnetic drawing tablet hardware

https://patchouli.readthedocs.io/en/latest/
399•ffin•14h ago•46 comments

Dynamic Large Concept Models: Latent Reasoning in an Adaptive Semantic Space

https://arxiv.org/abs/2512.24617
40•gmays•3h ago•4 comments

A closer look at a BGP anomaly in Venezuela

https://blog.cloudflare.com/bgp-route-leak-venezuela/
335•ChrisArchitect•13h ago•181 comments

Show HN: DeepDream for Video with Temporal Consistency

https://github.com/jeremicna/deepdream-video-pytorch
52•fruitbarrel•6h ago•17 comments

Show HN: I built a tool to create AI agents that live in iMessage

https://tryflux.ai/
10•danielsdk•4d ago•7 comments

Open Infrastructure Map

https://openinframap.org
363•efskap•16h ago•84 comments

Dell admits consumers don't care about AI PCs

https://www.pcgamer.com/hardware/dells-ces-2026-chat-was-the-most-pleasingly-un-ai-briefing-ive-h...
221•mossTechnician•1d ago•143 comments

Kernel bugs hide for 2 years on average. Some hide for 20

https://pebblebed.com/blog/kernel-bugs
264•kmavm•17h ago•139 comments

Japanese electronics store pleads for old PCs amid ongoing hardware shortage

https://www.tomshardware.com/desktops/pc-building/major-japanese-electronics-store-begs-customers...
123•speckx•4h ago•74 comments

The Napoleon Technique: Postponing things to increase productivity

https://effectiviology.com/napoleon/
213•Khaine•3d ago•111 comments

The Rise of Computer Games, Part II: Digitizing Nerddom – Creatures of Thought

https://technicshistory.com/2026/01/02/the-rise-of-computer-games-part-ii-digitizing-nerddom/
16•rbanffy•5d ago•0 comments

Supernova Remnant Video from NASA's Chandra Is Decades in Making

https://www.nasa.gov/missions/chandra/supernova-remnant-video-from-nasas-chandra-is-decades-in-ma...
29•dylan604•2h ago•3 comments

Nvidia Kicks Off the Next Generation of AI with Rubin

https://nvidianews.nvidia.com/news/rubin-platform-ai-supercomputer
30•TSiege•2h ago•13 comments

Signals vs. Query-Based Compilers

https://marvinh.dev/blog/signals-vs-query-based-compilers/
25•todsacerdoti•4d ago•2 comments

Go.sum is not a lockfile

https://words.filippo.io/gosum/
152•pabs3•15h ago•67 comments

Tailscale state file encryption no longer enabled by default

https://tailscale.com/changelog
347•traceroute66•23h ago•132 comments
Open in hackernews

Anatomy of a SQL Engine

https://www.dolthub.com/blog/2025-04-25-sql-engine-anatomy/
168•ingve•8mo ago

Comments

jimbokun•8mo ago
Very nice write up enumerating all the stages of SQL query execution. Interesting even if you don’t care about the DoIt database specifically.
Austizzle•8mo ago
Man, this title tripped me up for a minute because I pronounce it with the letters like Ess-Queue-Ell

So the "A" in "A ess-queue-ell" engine felt like it should have been an "An" until I realized it was meant to be pronounced like "sequel"

perching_aix•8mo ago
Not necessarily, I see native speakers completely ignore this a lot.

Have you ever considered pronouncing it as squirrel by the way?

kreetx•8mo ago
Many (most?) non-native English speakers do pronounce it as ess-queue-ell, especially in their own languages, so yes, the use of "a" instead of "an" does look off from that perspective.
SloopJon•8mo ago
When I read SQL for Dummies almost thirty years ago, it made a point of distinguishing "sequel" as a historical predecessor to standard "SQL." As I recall, the author even asserted that SQL is not an acronym/initialism for structured query language. I felt funny saying sequel for the next decade or so, because I wasn't an old timer experienced with this pre-SQL technology.

Now I usually say sequel because everyone else does. That and it rolls off the tongue better than S-Q-L.

jtolmar•8mo ago
I prefer "ess queue ell" these days, but the first DBA I ever worked with pronounced it "squirrel".
gopalv•8mo ago
This is a great write up about a pull-style volcano SQL engine.

The IR I've used is the Calcite implementation, this looks very concept adjacent enough that it makes sense on the first read.

> tmp2/test-branch> explain plan select count() from xy join uv on x = u;

One of the helpful things we did was to build a graphviz dot export for the explains plans, which saved us days and years of work when trying to explain an optimization problem between the physical and logical layers.

My version would end up displayed as SVG like this

https://web.archive.org/web/20190724161156/http://people.apa...

But the calcite logical plans also have that dot export modes.

https://issues.apache.org/jira/browse/CALCITE-4197

th0ma5•8mo ago
This is really great!!
gavinray•8mo ago
Calcite also has a relatively-unknown web tool for plan visualization that lets you step through execution.

It's a method from "RuleMatchVisualizer":

https://github.com/apache/calcite/blob/36f6dddd894b8b79edeb5...

Here's a screenshot of what the webpage looks like, for anyone curious:

https://github.com/GavinRay97/GraphQLCalcite/blob/92b18a850d...

ignoreusernames•8mo ago
I recommend anyone who works with databases to write a simple engine. It's a lot simpler than you may think and it's a great exercise. If using python, sqlglot (https://github.com/tobymao/sqlglot) let's you skip all the parsing and it even does some simple optimizations. From the parsed query tree it's pretty straightforward to build a logical plan and execute that. You can even use python's builtin ast module to convert sql expressions into python ones (so no need for a custom interpreter!)
Abde-Notte•8mo ago
Second this - building even a simple engine gives real insight into query planning and execution. Once parsing is handled, the core ideas are a lot more approachable than they seem.
albert_e•8mo ago
Sorry for slight digression.

In a larger system we are building we need a text-to-sql capability for some structured data retrieval.

Is there a way one could utilize this library (sqlglot) to build a multi-dialect sql generator -- that is not currently solved by directly relying on a LLM that is better at code generation in general?

LtdJorge•8mo ago
This is a SQL to X library, though. I don’t think it’s what you need.
gavinray•8mo ago
You can use an LLM to generate query-builder expressions from popular libraries in whatever language.

For example, on the JVM there is jOOQ, which allows you to write something like:

  select(field("foo"), avg("bar")).from(table("todos"))
And then it will render dialect-specific SQL. It has very advanced emulation functionality for things like JSON aggregations and working around quirks of dialects.

Alternatively, you can ask an LLM to generate a specific dialect of SQL, and then use jOOQ to parse it to an AST, and then render it as a different dialect, like:

    val parser= DSL.using(SQLDialect.POSTGRES).parser()
    val parsedQuery = parser.parseQuery(postgresQuery)
    val renderedMySQL = DSL.using(SQLDialect.MYSQL).renderInlined(parsedQuery)
    println(renderedMySQL)
Unsure if functionality like this exists in other Query Builder libraries for other languages.
genai-analyst•8mo ago
another digression here... sorry... i see you're trying to diy text-to-sql—at some point you're gonna hit a bunch of hiccups. like, the model writes a query that “almost” works but joins the wrong tables, or it assumes column names that don’t exist, or it returns the wrong agg because it misread the intent. and retries won’t always save you—it’ll just confidently hallucinate again.

we’ve been through all of that at wobby.ai we ended up building a system where the data team defines guardrails and reusable query templates, so the agent doesn’t just make stuff up. it can still handle user prompts, but within a safe structure. if you want to save yourself from debugging this stuff endlessly, might be worth checking out wobby.ai.

KyleBrandt•8mo ago
Using dolthub's go-mysql-server for Grafana's upcoming SQL expressions feature (private preview in Grafana 12, but in the OSS version with a feature toggle).

GMS lets you provide your own table and database implementations, so we use GMS to perform SQL queries against Grafana's dataframes - so users can join or manipulate different data source queires, but we don't have to insert the data into SQL to do this thanks to GMS.