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European digital ID wallets are a gift to Google and Apple

https://waag.org/en/article/european-digital-id-wallets-are-gift-google-and-apple/
243•donohoe•1h ago•105 comments

The US ambassador had Belgian police stop our reporting

https://europeancorrespondent.com/en/r/the-us-ambassador-had-belgian-police-stop-our-reporting
100•robtherobber•2h ago•24 comments

Building a custom octocopter from scratch with no prior hardware experience

https://karolina.mgdubiel.com/drone/
95•noleary•2d ago•24 comments

Parse, Don't Validate – In a Language That Doesn't Want You To

https://cekrem.github.io/posts/parse-dont-validate-typescript/
26•fagnerbrack•1h ago•6 comments

Open Source Low Tech

https://opensourcelowtech.org/
346•grep_it•4d ago•65 comments

Sony erases digital content from libraries; reminded we don't own what we buy

https://arstechnica.com/gadgets/2026/06/sony-erases-digital-content-from-libraries-were-reminded-...
85•pseudolus•1h ago•31 comments

Qwen 3.6 27B is the sweet spot for local development

https://quesma.com/blog/qwen-36-is-awesome/
983•stared•19h ago•642 comments

Antares Achieves Criticality of Mark-0 Reactor

https://antaresindustries.com/updates/antares-achieves-criticality
39•clarionbell•3h ago•27 comments

Exercise intensity influences body composition in healthy older adults

https://www.maturitas.org/article/S0378-5122(25)00571-7/fulltext
43•bookofjoe•1h ago•47 comments

.self: A new top-level domain designed to support self-hosting

https://hccf.onmy.cloud/2026/06/21/reclaiming-our-digital-selves-hccfs-vision-for-a-human-centere...
550•HumanCCF•16h ago•318 comments

Free the Icons

https://weblog.rogueamoeba.com/2026/06/26/free-the-icons/
520•zdw•2d ago•170 comments

The operating cost starts after the demo

https://twoheads.net/the-promise-is-unattended-work/
35•hellokfk•4d ago•21 comments

Memory Safe Context Switching

https://fil-c.org/context_switches
152•modeless•11h ago•25 comments

LongCat-2.0, a large-scale MoE model with 1.6T total and 48B Active

https://longcat.chat/blog/longcat-2.0/
178•benjiro29•11h ago•47 comments

Rocketlab acquires Iridium

https://investors.rocketlabcorp.com/news-releases/news-release-details/rocket-lab-acquire-iridium...
423•everfrustrated•22h ago•279 comments

Linux for the Sega MegaDrive

https://github.com/LinuxMD/linuxmd
141•HardwareLust•21h ago•18 comments

Old Computer Challenge

http://occ.sdf.org/
78•wrxd•2d ago•32 comments

Exploring PDP-1 Lisp (1960)

https://obsolescence.dev/pdp1-lisp-introduction.html
87•ozymandiax•11h ago•22 comments

All Logic, No Bite

https://lcamtuf.substack.com/p/all-logic-no-bite
8•surprisetalk•3d ago•0 comments

Ornith-1.0: self-improving open-source models for agentic coding

https://github.com/deepreinforce-ai/Ornith-1
222•danboarder•19h ago•40 comments

Why Problem Statements Aren't Enough

https://letters.unchartedpathbreakthroughs.com/posts/why-problem-statements-arent-enough
6•mooreds•4d ago•2 comments

One million passports leaked online

https://www.theverge.com/tech/947157/passports-data-breach-cannabis-club-systems-nefos-puffpal
312•jruohonen•2d ago•190 comments

How to corrupt an SQLite database file

https://www.sqlite.org/howtocorrupt.html
100•tosh•3d ago•19 comments

US Supreme Court rules geofence warrants require constitutional protections

https://www.theguardian.com/us-news/2026/jun/29/supreme-court-geofence-warrants-case-decision
546•cdrnsf•20h ago•251 comments

Zig – SPIR-V Backend Progress

https://ziglang.org/devlog/2026/#2026-06-26
79•Retro_Dev•4d ago•43 comments

Apple Neural Engine: Architecture, Programming, and Performance

https://arxiv.org/abs/2606.22283
192•Jimmc414•2d ago•25 comments

30-year sentence for transporting zines is a five-alarm fire for free speech

https://theintercept.com/2026/06/26/daniel-sanchez-estrada-zines-prairieland-free-speech/
631•xrd•1d ago•372 comments

Dark Sky Lighting

https://www.savingourstars.org/darkskylighting#whatisdarkskylighting
223•alexandrehtrb•4d ago•40 comments

WATaBoy: JIT-Ing Game Boy Instructions to WASM Beats a Native Interpreter

https://humphri.es/blog/WATaBoy/
214•energeticbark•21h ago•34 comments

What happens when you run a CUDA kernel?

https://fergusfinn.com/blog/what-happens-when-you-run-a-gpu-kernel/
266•mezark•23h ago•31 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.