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We All Depend on Open Source. We Will Defend It Together

https://akrites.org/letter/
155•dhruv3006•5h ago•72 comments

Om Malik has died

https://om.co/2026/06/24/1966-2026/
921•minimaxir•14h ago•108 comments

An entire Herculaneum scroll has been read for the first time

https://scrollprize.org/firstscroll
1323•verditelabs•19h ago•280 comments

Libre Barcode Project

https://graphicore.github.io/librebarcode/
162•luu•7h ago•25 comments

What happened after 2k people tried to hack my AI assistant

https://www.fernandoi.cl/posts/hackmyclaw/
174•cuchoi•8h ago•63 comments

Framework's 10G Ethernet module exposes USB-C's complexity

https://www.jeffgeerling.com/blog/2026/framework-10g-ethernet-module-usb-c-complexity/
180•Alupis•9h ago•94 comments

The 'papers, please' era of the internet will decimate your privacy

https://expression.fire.org/p/the-papers-please-era-of-the-internet
733•bilsbie•13h ago•347 comments

The Garbage Collection Handbook: The Art of Automatic Memory Management (2nd Ed) (2023)

https://gchandbook.org/
148•teleforce•11h ago•23 comments

A game where you're an OS and have to manage processes, memory and I/O events

https://github.com/plbrault/youre-the-os
217•exploraz•3d ago•42 comments

Oxide computer 3D rack guided tour

https://explorer.oxide.computer/
374•darthcloud•3d ago•149 comments

IBM debuts sub-1 nanometer chip technology

https://newsroom.ibm.com/2026-06-25-ibm-debuts-worlds-first-sub-1-nanometer-chip-technology
324•porridgeraisin•19h ago•175 comments

22-year-old Mozart's handwritten notebook unearthed in 'major discovery'

https://www.classicfm.com/composers/mozart/handwritten-notebook-discovered-major-paris/
61•thunderbong•5d ago•6 comments

My Steam Machine Is a 50ft HDMI Cable

https://blog.matthewbrunelle.com/my-steam-machine-is-a-50ft-hdmi-cable/
45•speckx•2d ago•40 comments

Doing a masters while working in Spain

https://jan-herlyn.com/blog/doing-a-masters-while-working/
50•MHard•4d ago•33 comments

Show HN: OpenKnowledge – open source AI-first alternative to Obsidian/Notion

https://github.com/inkeep/open-knowledge
286•engomez•18h ago•139 comments

Un-0: Generating Images with Coupled Oscillators

https://unconv.ai/blog/introducing-un-0-generating-images-with-coupled-oscillators/
154•babelfish•14h ago•36 comments

Show HN: Chess-Inspired Roguelike

https://princechazz.com
307•cowboy_henk•5d ago•104 comments

An oral history of Bank Python (2021)

https://calpaterson.com/bank-python.html
122•tosh•14h ago•39 comments

Hey Nico, you didn't vibe code your data room but stole it from Papermark

https://twitter.com/mfts0/status/2070080422482977095
359•mmunj•22h ago•145 comments

OS9Map

https://yllan.org/software/OS9Map/
233•LaSombra•19h ago•45 comments

Apple raises prices of MacBooks, iPads

https://www.reuters.com/world/asia-pacific/apple-raises-prices-macbooks-ipads-memory-costs-skyroc...
735•virgildotcodes•21h ago•1055 comments

Zig's new bitCast semantics and LLVM back end improvements

https://ziglang.org/devlog/2026/#2026-06-25
242•kouosi•20h ago•124 comments

The Doorman's Fallacy in action

https://rozumem.xyz/posts/17
122•rozumem•14h ago•173 comments

Record type inference for dummies

http://haskellforall.com/2026/06/record-type-inference-for-dummies
46•g0xA52A2A•2d ago•1 comments

Apple to skip high-end M6 Mac chips in favor of AI-focused M7 line

https://www.bloomberg.com/news/articles/2026-06-25/apple-to-skip-high-end-m6-mac-chips-to-launch-...
271•scrlk•17h ago•267 comments

Microbubbles in Medicine

https://worksinprogress.co/issue/microbubbles/
7•Jimmc414•4d ago•0 comments

Parallel Parentheses Matching

https://williamdue.github.io/blog/parallel-parentheses-matching
93•Athas•14h ago•11 comments

You can't unit test for taste

https://dev.karltryggvason.com/you-cant-unit-test-for-taste/
276•kalli•2d ago•127 comments

The last Romans are still around

https://signoregalilei.com/2026/06/20/the-last-romans-are-still-around/
97•surprisetalk•3d ago•128 comments

The disappearance of Japan's animators

https://economist.com/interactive/1843/2026/06/19/the-strange-disappearance-of-japans-animators
170•andsoitis•4d ago•136 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.