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To study how chips work, MIT researchers built their own operating system

https://news.mit.edu/2026/to-study-how-chips-really-work-mit-researchers-built-their-own-operatin...
28•speckx•3d ago•0 comments

Zero-Touch OAuth for MCP

https://blog.modelcontextprotocol.io/posts/enterprise-managed-auth/
117•niyikiza•5h ago•54 comments

How Japan's railways stayed one while splitting apart

https://arun.is/blog/jr-logo/
47•ddrmaxgt37•1d ago•30 comments

Datasette Apps: Host custom HTML applications inside Datasette

https://simonwillison.net/2026/Jun/18/datasette-apps/
35•lumpa•2h ago•9 comments

I found 10k GitHub repositories distributing Trojan malware

https://orchidfiles.com/github-repositories-distributing-malware/
685•theorchid•15h ago•160 comments

Cell-based architecture for resilient payment systems

https://americanexpress.io/cell-based-architecture-for-resilient-payment-systems/
95•birdculture•3d ago•37 comments

Ubiquiti: Enterprise NAS, Built on ZFS

https://blog.ui.com/article/introducing-enterprise-nas
268•ksec•12h ago•248 comments

Automating my job away

https://austinhenley.com/blog/automatingmyjob.html
21•azhenley•5d ago•8 comments

Zork name origin got an update on Wikipedia

https://www.dpolakovic.space/blogs/zork-part2#update
63•dpola•6h ago•9 comments

Flexport (YC W14) Is Hiring in Indonesia, India, and Thailand

https://www.flexport.com/company/careers/
1•thedogeye•2h ago

CS 6120: Advanced Compilers: The Self-Guided Online Course (2020)

https://www.cs.cornell.edu/courses/cs6120/2025fa/self-guided/
320•ibobev•16h ago•46 comments

Hospitals and universities repurposing drugs at lower cost

https://www.kcl.ac.uk/news/hospitals-and-universities-repurposing-drugs-at-90-lower-cost
289•giuliomagnifico•16h ago•125 comments

I told them forced consent was unlawful. 5 years later it cost Elkjop €1.8M

https://www.thatprivacyguy.com/blog/elkjop-forced-consent-fine/
256•speckx•8h ago•110 comments

Launch HN: TesterArmy (YC P26) – Agents that test web and mobile apps

https://tester.army
107•okwasniewski•12h ago•47 comments

Show HN: Are You in the Weights?

https://www.intheweights.com/
210•turtlesoup•6h ago•129 comments

.gitignore Isn't the only way to ignore files in Git

https://nelson.cloud/.gitignore-isnt-the-only-way-to-ignore-files-in-git/
300•FergusArgyll•16h ago•102 comments

Building a robotics research setup that lives next to my desk

https://dfdxlabs.com/research/2026/robotics-setup/
10•mplappert•12h ago•0 comments

Swiss parliament lifts ban on new nuclear power plants

https://www.bluewin.ch/en/news/switzerland/parliament-lifts-ban-on-new-nuclear-power-plants-32575...
712•leonidasrup•12h ago•592 comments

The Token Compression Illusion: Why I'm Skeptical of RTK

https://mroczek.dev/articles/the-token-compression-illusion-why-im-skeptical-of-rtk/
80•lackoftactics•9h ago•89 comments

Noam Shazeer Joins OpenAI

https://twitter.com/NoamShazeer/status/2067400851438932297
297•lukasgross•1d ago•288 comments

W Social, public institutions and the theater of European digital sovereignty

https://blog.elenarossini.com/w-social-public-institutions-and-the-theater-of-european-digital-so...
177•nemoniac•14h ago•118 comments

Modos Color Monitor Pushes E-Paper Displays Further

https://spectrum.ieee.org/modos-e-paper-monitor
234•Vinnl•15h ago•66 comments

If your product is Great, it doesn't need to be Good (2010)

http://paulbuchheit.blogspot.com/2010/02/if-your-product-is-great-it-doesnt-need.html
32•skogstokig•3d ago•28 comments

Show HN: Talos – Open-source WASM interpreter for Lean

https://github.com/cajal-technologies/talos
16•mfornet•14h ago•2 comments

How Alberta Eradicated Rats

https://worksinprogress.co/issue/albertas-war-on-rats/
141•tzury•14h ago•105 comments

Show HN: Gerrymandle - Daily puzzle game where you redraw electoral districts

https://gerrymandle.cc/
144•realmofthemad•12h ago•65 comments

Migrating from GNU Stow to Chezmoi

https://rednafi.com/misc/chezmoi/
107•speckx•10h ago•105 comments

Agentic Resource Discovery Specification

https://agenticresourcediscovery.org/introduction/
53•damick•1d ago•15 comments

Update on Ocean Observatories Initiative

https://www.nsf.gov/news/update-ocean-observatories-initiative
106•andsoitis•3h ago•20 comments

NOLA 'Nacular: One man's crusade to preserve New Orleans's vernacular signage

https://countryroadsmagazine.com/art-and-culture/people-places/nola-nacular/
12•NaOH•2d ago•2 comments
Open in hackernews

Anatomy of a SQL Engine

https://www.dolthub.com/blog/2025-04-25-sql-engine-anatomy/
168•ingve•1y ago

Comments

jimbokun•1y 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•1y 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•1y ago
Not necessarily, I see native speakers completely ignore this a lot.

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

kreetx•1y 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•1y 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•1y ago
I prefer "ess queue ell" these days, but the first DBA I ever worked with pronounced it "squirrel".
gopalv•1y 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•1y ago
This is really great!!
gavinray•1y 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•1y 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•1y 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•1y 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•1y ago
This is a SQL to X library, though. I don’t think it’s what you need.
gavinray•1y 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.
KyleBrandt•1y 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.

genai-analyst•1y 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.