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Open Source @Github

fp.

HackerRank open sourced its ATS. My resume scored 90/100. Oh wait 74. No – 88

https://danunparsed.com/p/hackerrank-open-source-ats
558•sambellll•10h ago•226 comments

GLM 5.2 beats Claude in our benchmarks

https://semgrep.dev/blog/2026/we-have-mythos-at-home-glm-52-beats-claude-in-our-cyber-benchmarks/
902•jms703•18h ago•414 comments

Pollen (CEO Negus-Fancey, CTO Wright) tried to remove article, and Google helped

https://blog.pragmaticengineer.com/pollen-tried-to-remove-my-article-about-callum-negus-fancey-an...
271•taubek•2h ago•33 comments

NUMA: Cores, memory, and the distance between them

https://edera.dev/stories/numa-part-1-cores-memory-and-the-distance-between-them
39•sys_call•4d ago•4 comments

Sandia National Labs SA3000 8085 CPU

https://www.cpushack.com/2026/06/03/sandia-national-labs-sa3000-8085-cpu/
9•rbanffy•1h ago•0 comments

Dissecting Apple's Sparse Image Format (ASIF)

https://schamper.dev/dissecting-apples-sparse-image-format-asif/
96•supermatou•19h ago•15 comments

Age verification is just a precursor to automated attribution of speech

https://nonogra.ph/age-verification-is-just-a-precursor-to-attribution-of-speech-06-29-2026
581•arkhiver•8h ago•334 comments

We found a bug in the hyper HTTP library

https://blog.cloudflare.com/hyper-bug/
81•Pop_-•4d ago•24 comments

Historical memory prices 1960-2026

https://dam.stanford.edu/memory-prices.html
328•vga1•17h ago•130 comments

5k menus from the New York Public Library’s Buttolph Collection (1880-1920)

https://pudding.cool/2026/06/menu-story/
379•xbryanx•21h ago•97 comments

I used Claude Code to get a second opinion on my MRI

https://antoine.fi/mri-analysis-using-claude-code-opus
458•engmarketer•19h ago•593 comments

Why did this journal retract two 1940s papers by Max Planck?

https://arstechnica.com/science/2026/06/why-did-this-journal-retract-two-1940s-papers-by-max-planck/
146•DR_MING•2h ago•7 comments

Knowledge Distillation of Black-Box Large Language Models (2024)

https://arxiv.org/abs/2401.07013
104•babelfish•13h ago•19 comments

Halvar's Guide to Entrepreneurship

https://thomasdullien.github.io/guides/entrepreneurship/
10•nekitamo•3d ago•1 comments

Deciphering basmala

https://blog.plover.com/lang/bismillah.html
74•lordgrenville•5d ago•22 comments

Herdr: Agent multiplexer that lives in your terminal

https://github.com/ogulcancelik/herdr
80•mzehrer•7h ago•51 comments

Show HN: Zanagrams

https://zanagrams.com/
306•pompomsheep•20h ago•77 comments

Tokenmaxxing is dead, long live tokenmaxxing

https://12gramsofcarbon.com/p/agentics-tech-things-tokenmaxxing
159•theahura•19h ago•216 comments

The KIDS Act would require age checks to get online

https://www.eff.org/deeplinks/2026/06/kids-act-would-require-age-checks-get-online
516•bilsbie•23h ago•421 comments

Let's Decode the Mystery Bytes [video]

https://www.youtube.com/watch?v=GZqB4D_Do38
12•surprisetalk•4d ago•1 comments

Professor denounces mass AI fraud on an exam at Brown

https://english.elpais.com/education/2026-06-28/ai-fraud-at-brown-university-academic-integrity-i...
435•geox•19h ago•572 comments

Working around dragons with the Lemote Yeeloong laptop and OpenBSD

http://oldvcr.blogspot.com/2026/06/working-around-dragons-with-lemote.html
128•zdw•18h ago•36 comments

TOP500 at ISC’26: We have a New Number 1 Supercomputer

https://chipsandcheese.com/p/top500-at-isc26-we-have-a-new-number
114•rbanffy•16h ago•72 comments

The Boeing 747 begins its final descent

https://www.theatlantic.com/magazine/2026/07/boeing-747-retirement/687304/
198•dbl000•3d ago•295 comments

Daisugi, the Japanese technique of growing trees out of other trees (2020)

https://www.openculture.com/2020/10/daisugi.html
148•MaysonL•19h ago•47 comments

The Forgotten Castles of the Garamantes

https://www.wildmanlife.com/the-forgotten-castles-of-the-garamantes/
34•bookofjoe•4d ago•4 comments

Librepods: AirPods liberated

https://github.com/librepods-org/librepods
414•rbanffy•17h ago•142 comments

The Baffling World of Masayoshi Son's Presentations (2020)

https://www.bloomberg.com/news/features/2020-06-23/golden-geese-and-unicorns-inside-the-eccentric...
71•phaser•3d ago•29 comments

Model Training as Code

https://aleph-alpha.com/en/blog/model-training-as-code/
168•peterBlue75•3d ago•21 comments

A way to exclude sensitive files issue still open for OpenAI Codex

https://github.com/openai/codex/issues/2847
211•pikseladam•23h ago•133 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.