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Midjourney Medical

https://www.midjourney.com/medical/blogpost
135•ricochet11•1h ago•135 comments

Lore – Open source version control system designed for scalability

https://lore.org/
1011•regnerba•12h ago•549 comments

Taxonomy of the Occlupanida (parasitoids on bread bag tags)

https://www.horg.com/horg/?page_id=921
78•beatthatflight•3h ago•12 comments

US holds off blacklisting DeepSeek, more than 100 firms deemed security risks

https://www.reuters.com/world/china/us-holds-off-blacklisting-chinas-deepseek-more-than-100-firms...
380•giuliomagnifico•23h ago•409 comments

Storied Colors – a catalogue of named colors

https://storiedcolors.com/
107•susiecambria•5h ago•24 comments

Clojure Hosted on Go

https://github.com/glojurelang/glojure
39•dnlo•3h ago•5 comments

U.S. science is in chaos

https://www.scientificamerican.com/article/americas-compact-between-science-and-politics-is-broken/
711•presspot•17h ago•840 comments

Loreline – Tools for writing interactive fiction

https://loreline.app/en/
82•smartmic•6h ago•10 comments

Show HN: We built an 8-bit CPU as 2nd year EE students

https://github.com/c0rRupT9/STEPLA-1
35•CorRupT9•2d ago•7 comments

Launch HN: Adam (YC W25) – Open-Source AI CAD

https://github.com/Adam-CAD/CADAM
161•zachdive•10h ago•84 comments

How we run Firecracker VMs inside EC2 and start browsers in less than 1s

https://browser-use.com/posts/firecracker-browser-infra
218•gregpr07•1d ago•145 comments

[x86] AI Compute Extensions (ACE) Specification

https://x86ecosystem.org/resource/ai-compute-extensions-ace-specification/
4•matt_d•35m ago•0 comments

RFC 10008: The new HTTP Query Method

https://www.rfc-editor.org/info/rfc10008/
330•schappim•16h ago•144 comments

Show HN: An 8-bit live gamecast for baseball

https://ribbie.tv/watch
209•brownrout•10h ago•119 comments

Tesco moving 40k server workloads off VMware amid Broadcom's abusive conduct

https://arstechnica.com/information-technology/2026/06/tesco-moving-40000-server-workloads-off-vm...
184•Bender•6h ago•106 comments

How Madrid built its metro cheaply

https://worksinprogress.co/issue/how-madrid-built-its-metro-cheaply/
40•trymas•7h ago•10 comments

ChatGPT's image generator can be manipulated to produce violent, sexual content

https://mindgard.ai/blog/chatgpt-spontaneously-generated-violent-images-from-a-viral-prompt
59•dijksterhuis•2h ago•81 comments

Show HN: Spin Lab

https://srijanshukla.com/artifacts/spin-lab/
6•srijanshukla18•1d ago•0 comments

Volkswagen started blocking GrapheneOS users

https://discuss.grapheneos.org/d/35949-volkswagen-app?page=3
511•microtonal•12h ago•343 comments

Why thinking out loud with someone beats thinking alone

https://www.thesignalist.io/s/the-dialogue-dividend/
179•kodesko•14h ago•90 comments

A robot is sprinting towards you. Do you want it running on Claude or Grok?

https://openrouter.ai/blog/insights/royale-last-agent-standing/
184•Usu•6h ago•155 comments

Biological evolution and information acquisition

https://www.construction-physics.com/p/biological-evolution-and-information
14•chmaynard•6d ago•1 comments

The Return of Rigorous Full-System Timing Simulation

https://www.sigarch.org/the-return-of-rigorous-full-system-timing-simulation/
35•matt_d•1d ago•0 comments

Show HN: Inkwash, a watercolor sketching app and explanation

https://johnowhitaker.github.io/inkwash/about
182•Yenrabbit•4d ago•21 comments

Trellis AI (YC W24) hiring a product lead to build agents for healthcare access

https://www.ycombinator.com/companies/trellis-ai/jobs/Cg94htp-product-lead
1•macklinkachorn•10h ago

GLM-5.2 is the new leading open weights model on Artificial Analysis

https://artificialanalysis.ai/articles/glm-5-2-is-the-new-leading-open-weights-model-on-the-artif...
811•himata4113•17h ago•388 comments

Kirkland Roundabouts

https://kirklandroundabouts.com
166•DenisM•3d ago•132 comments

Made a free macOS menu bar app that fixes typing in the wrong keyboard layout

https://flickey.site
52•tal_alfi•7h ago•23 comments

MicroUI – A tiny, portable, immediate-mode UI library written in ANSI C

https://github.com/rxi/microui
198•peter_d_sherman•15h ago•71 comments

Pink Cosmo berries a hit in their trial season (2023)

https://fruitgrowersnews.com/article/pink-cosmo-berries-a-hit-in-their-trial-season/
9•mooreds•3d ago•3 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.