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Watching Go's new garbage collector move through the heap

https://theconsensus.dev/p/2026/07/19/observing-gos-garbage-collector-old-and-new.html
54•matheusmoreira•2d ago•3 comments

Decathlon Germany adds Wero payment option to decathlon.de website

https://www.sgieurope.com/e-commerce/decathlon-germany-launches-wero-payment-on-its-website/12239...
175•doener•2h ago•127 comments

Kimi-K3 on HuggingFace

https://huggingface.co/moonshotai/Kimi-K3
1159•nateb2022•13h ago•459 comments

Glue bonds to nonstick surfaces and wipes clean with ethanol

https://cen.acs.org/materials/adhesives/glue-bonds-nonstick-surfaces-wipes-clean/104/web/2026/07
93•gmays•4d ago•43 comments

Self-contained highly-portable Python distributions

https://gregoryszorc.com/docs/python-build-standalone/main/
24•jcbhmr•59m ago•2 comments

MAI-Cyber-1-Flash inside MDASH

https://microsoft.ai/news/introducing-mai-cyber-1-flash-inside-mdash/
173•migmartri•2h ago•86 comments

The computer that helped win World War II

https://spectrum.ieee.org/colossus-computer-ieee-milestone
104•baruchel•5d ago•51 comments

Exploiting Volvo/Eicher's fleet platform to gain control over all users/vehicles

https://eaton-works.com/2026/07/27/my-eicher-hack/
59•EatonZ•4h ago•11 comments

Show HN: FeyNoBg – Automatic background removal model and training library

https://usefeyn.com/blog/feynobg/
39•snyy•2h ago•12 comments

Bytecode-to-Source Mapping

https://tidefield.dev/bytecode-to-source-mapping/
10•evakhoury•1h ago•0 comments

UpCodes (YC S17) is hiring remote AE's to help make buildings cheaper

https://up.codes/careers?utm_source=HN
1•Old_Thrashbarg•2h ago

Removing React.js from the codebase and adapting Htmx for UI interactivity (2023)

https://misago-project.org/t/removing-reactjs-from-the-codebase-and-adapting-htmx-for-ui-interact...
178•Ralfp•9h ago•126 comments

Paged Out #9 [pdf]

https://pagedout.institute/download/PagedOut_009.pdf
90•laurensr•5h ago•13 comments

Judge Rejects Google's Attempt to DMCA Its Way Out of Being Scraped

https://www.techdirt.com/2026/07/27/judge-rejects-googles-attempt-to-dmca-its-way-out-of-being-sc...
46•cdrnsf•1h ago•8 comments

Libsm64: Mario 64 as a library for use in external game engines

https://github.com/libsm64/libsm64
139•klaussilveira•9h ago•16 comments

If Scrubs Hurt, Your ZFS Design Is Broken

https://klarasystems.com/articles/if-scrubs-hurt-your-zfs-design-is-broken/
19•assimpleaspossi•4d ago•8 comments

First Robotic Satellite Servicer Launched

https://www.nrl.navy.mil/Media/News/Article/4551871/robotic-servicing-of-geosynchronous-satellite...
62•GlenTheMachine•4d ago•31 comments

Show HN: Infrawrench – A tool to manage cloud and svcs with workflows and chat

https://infrawrench.com
14•astrid__•3h ago•0 comments

Ray tracing massive amounts of animated geometry using tetrahedral cages

https://gpuopen.com/learn/ray-tracing-massive-amounts-animated-geometry/
3•LorenDB•4d ago•0 comments

How is the Bun Rewrite in Rust going?

https://lockwood.dev/ai/2026/07/27/how-is-the-bun-rewrite-in-rust-going.html
375•tomlockwood•8h ago•286 comments

Modern email can be built from borrowed parts

https://en.andros.dev/blog/d7ed8b07/modern-email-can-be-built-from-borrowed-parts/
138•andros•11h ago•65 comments

Should you wash your solar panels?

https://incoherency.co.uk/blog/stories/should-you-wash-your-solar-panels.html
186•surprisetalk•6h ago•165 comments

VLC for Unity now supported on Linux

https://code.videolan.org/videolan/vlc-unity
121•martz•10h ago•36 comments

How real are real numbers? (2004)

https://arxiv.org/abs/math/0411418
11•surprisetalk•4h ago•0 comments

The Artist Who Colored Ghibli

https://animationobsessive.substack.com/p/the-artist-who-colored-ghibli
18•herbertl•1h ago•1 comments

Towards a Theory of Bugs: The Ruliology of the Unexpected

https://writings.stephenwolfram.com/2026/07/towards-a-theory-of-bugs-the-ruliology-of-the-unexpec...
50•nsoonhui•3d ago•25 comments

Kimi-K3 Technical Report [pdf]

https://github.com/MoonshotAI/Kimi-K3/blob/main/k3_tech_report.pdf
335•vinhnx•4h ago•133 comments

Shay Locomotives

https://www.shaylocomotives.com/
63•Rygian•10h ago•16 comments

The Birth of the American 12-string Guitar (2013)

https://www.harpguitars.net/history/grunewald/12-string.htm
64•bilegeek•8h ago•39 comments

Why Lattice Semiconductor buying a x86_64 BIOS company shows engineer disrespect

13•VitaSetLLC•1h ago•1 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.