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Vulnerability reports are not special anymore

https://words.filippo.io/vuln-reports/
258•goranmoomin•9h ago•143 comments

Raspberry Pi Pico W as USB Wi-Fi Adapter

https://gitlab.com/baiyibai/pico-usb-wifi
123•byb•5h ago•34 comments

Why eval startups fail (2025)

https://thomasliao.com/eval-startups
16•jxmorris12•1d ago•7 comments

Jerry's Map

http://www.jerrysmap.com/the-map
462•turtleyacht•14h ago•53 comments

Show HN: An ASCII 3D Rendering Engine

https://glyphcss.com
116•apresmoi•3d ago•37 comments

FUTO Swipe – A new swipe typing model

https://swipe.futo.tech/
531•futohq•15h ago•167 comments

In memory of the man who put red and green squiggles under words

https://devblogs.microsoft.com/oldnewthing/20260622-00/?p=112451
369•saikatsg•15h ago•62 comments

Qwen-AgentWorld: Language World Models for General Agents

https://arxiv.org/abs/2606.24597
95•ilreb•6h ago•26 comments

"Fix" MacBook Neo Cursor Lag: Record 1 Pixel of the Screen Every 10 Seconds

https://gist.github.com/retroplasma/ec21767d0a8380c7ea9c2fbee1c7d6bf
88•retroplasma•6h ago•31 comments

Ashby (YC W19) Is Hiring EMEA Engineers Who Can Design

https://www.ashbyhq.com/careers?ashby_jid=87b96eef-edc1-4de4-adb6-d460126d02f8&utm_source=hn
1•abhikp•2h ago

Printing Gaussian Splats

https://www.patreon.com/DanyBittel/posts/printing-splats-161333338
294•ilnmtlbnm•2d ago•32 comments

Remaking BBC test cards to teach you video processing

https://www.youtube.com/watch?v=U_6HxPkrgcg
34•unleaded•2d ago•1 comments

Rhombus Language 1.0

https://blog.racket-lang.org/2026/06/rhombus-v1.0.html
158•Decabytes•1d ago•42 comments

Swift Package Index joins Apple

https://swiftpackageindex.com/blog/swift-package-index-joins-apple
203•JDevlieghere•15h ago•66 comments

A man was gifted his dream car by Kevin Mitnick, who he helped put in prison

https://www.thedrive.com/news/this-man-was-gifted-his-dream-car-by-the-notorious-hacker-he-put-in...
170•mauvehaus•1d ago•102 comments

Usbliter8: an A12/A13 SecureROM Exploit

https://ps.tc/pages/blog-usbliter8.html
139•givinguflac•5d ago•27 comments

Show HN: TikZ Editor – WYSIWYG editor for figures in LaTeX

https://tikz.dev/editor/
388•DominikPeters•18h ago•71 comments

The worthlessness of Vitamin D is mildly exaggerated

https://dynomight.net/vitamin-d/
291•surprisetalk•16h ago•203 comments

Dirty Little Zine – a tool for making an 8 page printable Zine

https://dirtylittlezine.com/
121•cianmm•3d ago•16 comments

Show HN: Graphical SQL Builder and Debugger

https://github.com/webofmarius/SQLJoiner
8•matei88•2d ago•1 comments

Meta Pauses Employee-Tracking Program Following Internal Data Leak

https://www.wired.com/story/meta-pauses-employee-tracking-program-following-internal-security-bre...
237•1vuio0pswjnm7•8h ago•157 comments

Lithp.py (~2008)

https://fogus.me/fun/lithp/
19•wglb•2d ago•3 comments

Millimeter wave technology drills 100 meters into granite

https://www.thinkgeoenergy.com/quaise-energy-achieves-100-meters-of-drilling-using-millimeter-wav...
152•Jimmc414•3d ago•49 comments

The Teensy Executable Revisited

https://www.muppetlabs.com/~breadbox/software/tiny/revisit.html
37•ankitg12•6h ago•3 comments

Inventing the Future, One Lisp Machine at a Time

https://www.patrickdomanico.com/bpm/2026/06/16/inventing-the-future-one-lisp-machine-at-a-time/
100•pamoroso•1d ago•14 comments

Fired by Google for creating the Google workspace CLI

https://twitter.com/JPoehnelt/status/2069482265953087602
518•justinwp•15h ago•302 comments

F* file system – file search that reads SSD directly bypassing OS kernel

https://github.com/dmtrKovalenko/ffs
69•neogoose•2d ago•41 comments

DiffusionBench: Towards Holistic Evaluation of Generative Diffusion Transformers

https://github.com/End2End-Diffusion/diffusion-bench
34•ilreb•7h ago•1 comments

The Low-Tech AI of Elden Ring

https://nega.tv/posts/low-tech-ai-of-elden-ring.html
147•g0xA52A2A•21h ago•82 comments

Five monitors on a Commodore 128 [video]

https://www.youtube.com/watch?v=ul5hC3PY1Yg
123•EvanAnderson•1d ago•22 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.