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Voyager 1 Is About to Reach One Light-Day from Earth

https://scienceclock.com/voyager-1-is-about-to-reach-one-light-day-from-earth/
314•ashishgupta2209•3h ago•105 comments

Cloudflare outage should not have happened

https://ebellani.github.io/blog/2025/cloudflare-outage-should-not-have-happened-and-they-seem-to-...
53•b-man•1h ago•27 comments

I don't care how well your "AI" works

https://fokus.cool/2025/11/25/i-dont-care-how-well-your-ai-works.html
404•todsacerdoti•7h ago•514 comments

OpenAI needs to raise at least $207B by 2030 so it can continue to lose money

https://ft.com/content/23e54a28-6f63-4533-ab96-3756d9c88bad
345•akira_067•2h ago•269 comments

A cell so minimal that it challenges definitions of life

https://www.quantamagazine.org/a-cell-so-minimal-that-it-challenges-definitions-of-life-20251124/
150•ibobev•7h ago•69 comments

Statistical Process Control in Python

https://timothyfraser.com/sigma/statistical-process-control-in-python.html
150•lifeisstillgood•8h ago•47 comments

Optery (YC W22) Hiring CISO, Release Manager, Tech Lead (Node), Full Stack Eng

https://www.optery.com/careers/
1•beyondd•32m ago

Show HN: I turned algae into a bio-altimeter and put it on a weather balloon

https://radi8.dev/blog/stratospore/
25•radeeyate•4d ago•2 comments

Slashdot Effect

https://en.wikipedia.org/wiki/Slashdot_effect
32•firefax•1h ago•33 comments

JOPA: Java compiler in C++, Jikes modernized to Java 6 with Claude

https://github.com/7mind/jopa
15•pshirshov•3d ago•8 comments

Show HN: KiDoom – Running DOOM on PCB Traces

https://www.mikeayles.com/#kidoom
296•mikeayles•19h ago•40 comments

Is DWPD Still a Useful SSD Spec?

https://klarasystems.com/articles/is-dwpd-still-useful-ssd-spec/
34•zdw•5d ago•15 comments

Qiskit open-source SDK for working with quantum computers

https://github.com/Qiskit/qiskit
22•thinkingemote•5h ago•1 comments

Image Diffusion Models Exhibit Emergent Temporal Propagation in Videos

https://arxiv.org/abs/2511.19936
79•50kIters•9h ago•12 comments

Surprisingly, Emacs on Android is pretty good

https://kristofferbalintona.me/posts/202505291438/
197•harryday•3d ago•101 comments

Copyparty, the FOSS file server [video]

https://www.youtube.com/watch?v=15_-hgsX2V0
160•franczesko•6d ago•47 comments

Justice dept. requires Realpage end sharing competitively sensitive information

https://www.justice.gov/opa/pr/justice-department-requires-realpage-end-sharing-competitively-sen...
42•phkahler•2h ago•31 comments

From blood sugar to brain relief: GLP-1 therapy slashes migraine frequency

https://www.medlink.com/news/from-blood-sugar-to-brain-relief-glp-1-therapy-slashes-migraine-freq...
3•Anon84•1h ago•0 comments

I DM'd a Korean presidential candidate and ended up building his core campaign

https://medium.com/@wjsdj2008/i-dmd-a-korean-presidential-candidate-and-ended-up-building-his-cor...
113•wjsdj2009•3h ago•58 comments

Efficient solar cooking that stores heat in sand

https://www.sciencedirect.com/science/article/pii/S266711312500035X
65•gsf_emergency_6•2d ago•35 comments

Trillions spent and big software projects are still failing

https://spectrum.ieee.org/it-management-software-failures
561•pseudolus•1d ago•522 comments

Jakarta is now the biggest city in the world

https://www.axios.com/2025/11/24/jakarta-tokyo-worlds-biggest-city-population
397•skx001•1d ago•310 comments

CS234: Reinforcement Learning Winter 2025

https://web.stanford.edu/class/cs234/
168•jonbaer•17h ago•35 comments

Show HN: We built an open source, zero webhooks payment processor

https://github.com/flowglad/flowglad
344•agreeahmed•1d ago•198 comments

1,700-year-old Roman sarcophagus is unearthed in Budapest

https://apnews.com/article/hungary-roman-sarcophagus-discovery-budapest-77a41fe190bbcc167b43d0514...
120•gmays•1d ago•69 comments

How to repurpose your old phone into a web server

https://far.computer/how-to/
289•louismerlin•3d ago•104 comments

A new bridge links the math of infinity to computer science

https://www.quantamagazine.org/a-new-bridge-links-the-strange-math-of-infinity-to-computer-scienc...
218•digital55•21h ago•125 comments

Launch HN: Onyx (YC W24) – Open-source chat UI

217•Weves•1d ago•142 comments

FLUX.2: Frontier Visual Intelligence

https://bfl.ai/blog/flux-2
342•meetpateltech•1d ago•99 comments

Java Decompiler

http://java-decompiler.github.io
109•mooreds•3d ago•44 comments
Open in hackernews

Anatomy of a SQL Engine

https://www.dolthub.com/blog/2025-04-25-sql-engine-anatomy/
168•ingve•7mo ago

Comments

jimbokun•7mo 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•7mo 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•7mo ago
Not necessarily, I see native speakers completely ignore this a lot.

Have you ever considered pronouncing it as squirrel by the way?

kreetx•7mo 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•7mo 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•7mo ago
I prefer "ess queue ell" these days, but the first DBA I ever worked with pronounced it "squirrel".
gopalv•7mo 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•7mo ago
This is really great!!
gavinray•7mo 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•7mo 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•7mo 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•7mo 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•7mo ago
This is a SQL to X library, though. I don’t think it’s what you need.
gavinray•7mo 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.
genai-analyst•6mo 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.

KyleBrandt•7mo 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.