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The coolest use for the Vision Pro

https://christianselig.com/2026/07/vision-pro-house/
106•robbiet480•1h ago•45 comments

Kimi K3-256k

https://www.kimi.com/code/docs/en/kimi-code/models
250•monneyboi•2h ago•67 comments

Show HN: Open-source engine running Gemma 4 26B in 2 GB RAM on any M-series Mac

https://github.com/drumih/turbo-fieldfare
550•gitpusher42•6h ago•187 comments

Anatomy of a Frontier Lab Agent Intrusion: A Timeline of the July 2026 Incident

https://huggingface.co/blog/agent-intrusion-technical-timeline
215•artninja1988•1d ago•115 comments

Superlogical

https://www.superlogical.com/
418•yan•6h ago•270 comments

Keychron announces first open-source firmware for gaming mice

https://www.digitalfoundry.net/news/2026/07/keychron-announces-first-open-source-firmware-for-gam...
206•JLO64•5h ago•85 comments

SalesPatriot (YC W25) Is Hiring FDEs

https://www.ycombinator.com/companies/salespatriot/jobs/M46X6YX-forward-deployed-engineer
1•maciejSz•41m ago

AI's top startups are barely publishing their research

https://www.science.org/content/article/ai-s-top-startups-are-barely-publishing-their-research
9•YeGoblynQueenne•17m ago•0 comments

KOReader

https://koreader.rocks/
620•Cider9986•10h ago•197 comments

A Trampoline

https://dogdogfish.com/blog/2026/07/29/a-trampoline/
30•matthewsharpe3•1h ago•10 comments

Theo Conjecture solves 35-year-old math problem, finds a term no one predicted

https://firstprinciples.com/blog-article/ai-system-theo-conjecture-solves-35-year-old-math-conjec...
17•otalp•1h ago•4 comments

Claude: Elevated errors across all models

https://status.claude.com/incidents/q2kg8n613kr3
210•gregsadetsky•1h ago•180 comments

A.I. companies are recruiting electricians and carpenters by the thousands

https://www.nytimes.com/2026/07/29/business/economy/data-center-electricians-training.html
176•thm•6h ago•224 comments

Turning a dumb AC unit smart (without losing my security deposit)

https://prilik.com/blog/post/automating-ac-nyc/
55•austinallegro•3h ago•51 comments

Handbook.md shows that long policy documents do not reliably govern agents

https://arxiv.org/abs/2607.25398
268•spIrr•8h ago•170 comments

Document-borne AI worms can self-propagate through Copilot for Word

https://enklypesalt.com/posts/context-collapse-part3-ai-worming-through-word/
309•Canopy9560•9h ago•231 comments

Commodification of Intelligence: Good, Bad, and Ugly Circular AI Deals

https://www.emergingtrajectories.com/lh/commodification-and-circularity/
32•cl42•2h ago•21 comments

Show HN: CheapFoodMap – A map of good meals under $10

https://cheapfoodmap.com/
82•jaep1•4h ago•89 comments

Some thoughts about Anthropic's new cryptanalysis results

https://blog.cryptographyengineering.com/2026/07/29/some-notes-about-anthropics-new-results/
77•supermatou•5h ago•42 comments

Launch HN: Tokenless (YC S26) – Automatic model switching to save money

https://usetokenless.com/
46•rohaga•5h ago•40 comments

How to not die by a thousand cuts or how to think about software quality (2023)

https://www.evalapply.org/posts/how-to-not-die-by-a-thousand-cuts/index.html
33•adityaathalye•3h ago•16 comments

Darktable

https://www.darktable.org/
254•siatko•9h ago•125 comments

How much can you delegate to agents?

https://newsletter.posthog.com/p/agent-autonomy
26•duck•2h ago•0 comments

The Rust on ESP Book

https://docs.espressif.com/projects/rust/book/
97•AlexeyBrin•4d ago•9 comments

Hamburg's Stadtpark: A Park Built to Be Used

https://alsterrunde.com/hamburgs-stadtpark-a-park-built-to-be-used/
91•mertbio•2d ago•25 comments

Self-hosting Kimi K3: 20% more hardware cost, 20% better task resolution

https://aistack.imec-int.com/blog/gpu-self-hosting
102•flifenstein•7h ago•34 comments

GPT-5.6 vs. Claude Fable 5 for Physical AI, which performs best?

https://juliahub.com/blog/frontier-models-physical-ai-evaluation
75•mbauman•6h ago•18 comments

Shipping Godot VR and Porting to PSVR2: A Partial Post Mortem

https://www.claire-blackshaw.com/blog/2026/07/shipping-godot-vr-and-porting-to-psvr2-a-partial-po...
99•ibobev•8h ago•11 comments

Show HN: Qwen Scribe – local transcription and dictation for Apple Silicon

https://github.com/VladUZH/qwen-scribe
67•sidclaw•6h ago•17 comments

User Interfaces of the Demo Scene

https://www.datagubbe.se/scenegui/
384•zdw•17h ago•68 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.