frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

507 Mechanical Movements

https://507movements.com/
164•helloplanets•2h ago•27 comments

Pollen Robotics (Hugging Face) Microduck

https://pollen-robotics.com/microduck/
274•robotswantdata•5h ago•113 comments

Nvidia agrees to acquire Hugging Face for $13B

https://www.businessinsider.com/nvidia-in-talks-to-buy-hugging-face-13-billion-dollars-2026-8
1650•mfiguiere•15h ago•772 comments

Emacs 31: An unofficial guide to Markdown-ts-mode

https://rahuljuliato.com/posts/markdown-ts-mode-emacs-31
83•RahulMJ•3h ago•25 comments

Yayoi Kusama has died

https://www.bbc.com/news/articles/c3v4k0re3vwo
58•herbertl•36m ago•6 comments

CoMaps integration with the wider FLOSS ecosystem

https://www.comaps.app/news/2026-08-23/comaps-integration-with-the-wider-floss-ecosystem/
82•janandonly•3h ago•9 comments

Launching Route 53 Files

https://www.daemonology.net/blog/2026-08-27-Launching-Route-53-Files.html
34•louis-paul•1h ago•16 comments

Launch HN: Salem Robotics (YC S26) – Software for industrial inspection robots

13•Salem_robotics•44m ago•4 comments

The Teaser Period: Why the AI Boom Is Hitting a Reset Wall

https://www.groundbrkr.com/p/the-teaser-period-why-the-ai-boom
27•gtzi•2h ago•15 comments

MIT's Ad Hoc Committee on AI Use in Teaching, Learning, and Research Training

https://aiandeducation.mit.edu/report/
54•pbui•3h ago•37 comments

Small Models Have Arrived

https://calv.info/small-models-have-arrived
7•tosh•33m ago•1 comments

Suica, Japan's First IC Transit Card

https://www.tokyodev.com/articles/the-story-of-suica
21•zdw•35m ago•6 comments

Trade (and Tariffs)

https://xkcd.com/3290/
223•throw0101d•2h ago•68 comments

Needle: The benchmark your search engine can't memorize

https://keenable.ai/blog/needle-the-benchmark-your-search-engine-can-t-memorize
13•matt4711•1h ago•1 comments

Adentris (YC P25) Is Hiring

https://www.ycombinator.com/companies/adentris/jobs/ZpMXZ0C-founding-engineer-ai-rcm-healthcare-p...
1•SergeyYudovskiy•4h ago

Show HN: Restoredrill – proves your Postgres backups restore

https://github.com/ahmadpiran/restoredrill
22•ahmadpiran•2h ago•7 comments

French CII's Mitra-15 in SIMH. Work in Progress

https://github.com/JPLeRouzic/Mitra-15-for-SIMH
15•JPLeRouzic•2h ago•1 comments

Decompiling a Nintendo 64 Game in 84 Days

https://blog.chrislewis.au/decompiling-a-nintendo-64-game-in-84-days/
11•knackers•1h ago•0 comments

Mechanical Turk shutting down September 30

https://www.mturk.com/
494•tmp10423288442•16h ago•149 comments

Why HPSC Is a Big Deal for Space Exploration

https://www.windriver.com/blog/Why-HPSC-Is-a-Big-Deal-for-Space-Exploration
3•mooreds•29m ago•0 comments

Nvidia projects $673B in sales as AI demand widens

https://forgeeks.net/nvidia-673-billion-ai-growth-forecast/
10•kuuuzya•1h ago•1 comments

Show HN: RealDiff – runtime behavior diffing for pull requests (six languages)

https://github.com/issacnitin/RealDiff
30•issacnitin•3h ago•4 comments

The broadcast squeezeback, rebuilt with CSS Grid and WebVTT

https://www.mux.com/blog/the-broadcast-squeezeback-rebuilt-with-css-grid-and-webvtt
4•mmcclure•34m ago•1 comments

Harness Engineering

https://Habitat-Thinking.github.io/ai-literacy-superpowers/plugins/ai-literacy-superpowers/explan...
90•tomrod•2h ago•37 comments

Peter Cullen, Voice of Optimus Prime in 'Transformers,' Dies at 85

https://www.hollywoodreporter.com/movies/movie-news/peter-cullen-optimus-prime-transformers-eeyor...
51•cocacola1•1h ago•8 comments

Engineered yeast for converting plastic and biomass compounds into food

https://acs.digitellinc.com/live/37/session/586399
3•ehwa37•50m ago•0 comments

Show HN: The load-bearing vocabulary of Claude

https://louisabraham.github.io/load-bearing/
96•Labo333•7h ago•39 comments

Uefa pursuing criminal legal action against Infantino

https://www.bbc.com/sport/football/articles/cx2zl5kwlxjo
27•brudgers•53m ago•9 comments

Tell HN: PayPal Blocks GrapheneOS

368•leumon•6h ago•205 comments

Hollywood's Video Game Era Is Here. Will It Be Any Good?

https://www.statsignificant.com/p/hollywoods-video-game-era-is-here
6•NomNew•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.