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Hacking your PC using your speaker without ever touching it

https://blog.nns.ee/2026/06/03/katana-badusb/
387•xx_ns•4h ago•70 comments

DaVinci Resolve 21

https://www.blackmagicdesign.com/products/davinciresolve/whatsnew
56•pentagrama•1h ago•27 comments

Meta workers can opt out of being tracked at work up to 30 min

https://www.bbc.com/news/articles/c93x0k194yno
307•reconnecting•2h ago•267 comments

Every Byte Matters

https://fzakaria.com/2026/06/01/every-byte-matters
147•ingve•4h ago•68 comments

A Post-Quantum Future for Let's Encrypt

https://letsencrypt.org/2026/06/03/pq-certs
9•SGran•34m ago•0 comments

PlayStation Architecture

https://www.copetti.org/writings/consoles/playstation/
130•gregsadetsky•5h ago•22 comments

Show HN: Edsger – A handwritten Clojure REPL for the reMarkable 2

https://handwritten.danieljanus.pl/2026-06-01-edsger.html
160•nathell•20h ago•26 comments

1-Click GitHub Token Stealing via a VSCode Bug

https://blog.ammaraskar.com/github-token-stealing/
566•ammar2•1d ago•83 comments

Nabokov's pale fire: the lost 'father of all hypertext demos'? (2011)

https://dl.acm.org/doi/pdf/10.1145/1995966.1996008
70•aragonite•2d ago•14 comments

I built a ceiling projection mapping of the planes flying over my house

https://old.reddit.com/r/nextfuckinglevel/comments/1tvmcin/i_live_in_the_take_off_path_of_sfo_and...
83•frereubu•2h ago•14 comments

Shopify Is Down

https://www.shopifystatus.com
48•harrouet•1h ago•32 comments

Show HN: I reverse-engineered the world maps of Test Drive III (1990 DOS game)

https://github.com/s-macke/Test-Drive-3-Maps
167•s-macke•3d ago•48 comments

Piramidal (YC W24) – Software Engineers – NYC Onsite

1•dsacellarius•3h ago

Use your Nvidia GPU's VRAM as swap space on Linux

https://github.com/c0dejedi/nbd-vram
400•tanelpoder•16h ago•106 comments

What I've learned about the trombone

http://bryanhu.com/blog/posts/what-ive-learned-about-the-trombone/
38•bookofjoe•4h ago•31 comments

MAI-Code-1-Flash

https://microsoft.ai/news/introducingmai-code-1-flash/
510•EvanZhouDev•20h ago•238 comments

He Blew the Whistle on DOGE. Then His Brakes Were Cut

https://www.wired.com/story/he-blew-the-whistle-on-doge-then-his-brakes-were-cut/
44•malshe•34m ago•25 comments

I Found a Bug in Apple's Fsck_hfs

https://medium.com/@kivancgunalp/i-found-a-bug-in-apples-fsck-hfs-here-s-how-i-tracked-it-down-ed...
3•zdw•14h ago•1 comments

32GB of DDR5 now costs $375 – AI shortage continues to squeeze PC building

https://www.tomshardware.com/pc-components/ddr5/32gb-of-ddr5-now-costs-usd375-minimum-ai-shortage...
150•papersail•2h ago•160 comments

Leiden Declaration on Artificial Intelligence and Mathematics

https://leidendeclaration.ai/
83•zvr•9h ago•38 comments

The Unreasonable Redundancy of Nature's Protein Folds

https://research.ligo.bio/posts/unreasonable-redundancy-of-natural-protein-folds/
138•ray__•11h ago•42 comments

Show HN: Tired of duct-taping access control into agent prompts. Here's the fix

https://github.com/yaodub/cast
10•zwigglers•2h ago•12 comments

Thomas Mann: Goethe Heartened by Panama (As Suez for English, or Danube-Rhine)

https://yalereview.org/article/thomas-mann-goethe
13•curio_Pol_curio•2d ago•0 comments

AI outperforms law professors in Stanford Law study

https://law.stanford.edu/press/ai-outperforms-law-professors-in-stanford-law-study/
354•berlianta•15h ago•298 comments

DIY Bipedal Robot Used Pneumatic "Air-Muscles" Instead of Motors

https://spectrum.ieee.org/shadow-walker-biped-humanoid-robot
55•sohkamyung•3d ago•17 comments

U of T researchers demonstrate AI worm could target any online device

https://www.utoronto.ca/news/u-t-researchers-demonstrate-ai-worm-could-target-any-online-device
97•shscs911•11h ago•32 comments

Pluto.jl 1.0 release – reactive notebook for Julia

https://discourse.julialang.org/t/pluto-1-0-release/137296
195•fons-p•16h ago•29 comments

Man out of Time: The travels and ecstasies of a Russian aesthete

https://lareviewofbooks.org/article/evocations-italy-pavel-muratov-russian-travel-modernism-art/
12•lermontov•1d ago•1 comments

Capstone – multi-platform, multi-architecture disassembly framework

https://www.capstone-engine.org/
91•gregsadetsky•13h ago•4 comments

Roku LT Operating System open source distribution

https://blog.roku.com/developer/roku-lt-os
103•dpmdpm•14h ago•47 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.