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Why SpaceX 2040 Revenue FCST $4.3T in highly unlikely

https://www.matteast.io/spacex-escape-velocity.html
39•meast•47m ago•7 comments

I'm Eric Ries, author of "The Lean Startup" and new book "Incorruptible" – AMA

290•eries•3h ago•234 comments

How JPL keeps the 13-year-old Curiosity rover doing science

https://spectrum.ieee.org/curiosity-rover-jpl-mars-science
40•pseudolus•1h ago•0 comments

Claude Desktop spins up a VM without no way of stopping it

https://github.com/anthropics/claude-code/issues/29045
53•tonyrice•1h ago•32 comments

PgDog is funded and coming to a database near you

https://pgdog.dev/blog/our-funding-announcement
241•levkk•4h ago•118 comments

Providers, not insurers, are responsible for excess U.S. health care cost (2024)

https://www.noahpinion.blog/p/insurers-arent-the-main-villain-of
26•paulpauper•54m ago•16 comments

GitHub Authentication issues related to API requests

https://www.githubstatus.com/incidents/fcj3088jg1wx
90•Multicomp•3h ago•23 comments

Building an HTML-first site doubled our users overnight

https://mohkohn.co.uk/writing/html-first/
764•edent•5h ago•355 comments

Mercedes‑Benz starts large‑scale production of electric axial flux motor

https://media.mercedes-benz.com/en/article/bebac2af-acdc-465a-9538-adb0bf3d8ccf
431•raffael_de•10h ago•260 comments

The Dynamo and the Computer: The Modern Productivity Paradox (1989) [pdf]

https://www.almendron.com/tribuna/wp-content/uploads/2018/03/the-dynamo-and-the-computer-an-histo...
11•simonpure•44m ago•0 comments

Apache Burr: Build reliable AI agents and applications

https://burr.apache.org/
103•anhldbk•3h ago•67 comments

All 9,300 Japanese train station, animated by the year it opened (1872–2026)

https://jivx.com/eki
138•momentmaker•6h ago•47 comments

DiffusionGemma: 4x Faster Text Generation

https://blog.google/innovation-and-ai/technology/developers-tools/diffusion-gemma-faster-text-gen...
144•meetpateltech•2h ago•30 comments

Show HN: HelixDB – A graph database built on object storage

https://github.com/HelixDB/helix-db/tree/main
21•GeorgeCurtis•2h ago•14 comments

Buy a train, bridge or tracks from the Swiss Railway

https://sbbresale.ch/
136•kisamoto•2d ago•67 comments

Show HN: Extend UI – open-source UI kit for modern document apps

https://www.extend.ai/ui
7•kbyatnal•2h ago•0 comments

Who's the Smartest Corvid?

https://thetyee.ca/Culture/2026/06/05/Whos-the-Smartest-Corvid/
13•NaOH•1d ago•5 comments

A €0.01 bank transfer could compromise a banking AI agent

https://blue41.com/blog/how-we-helped-bunq-secure-their-financial-ai-assistant/
87•tvissers•4h ago•72 comments

L'Affaire Siloxane

https://mceglowski.substack.com/p/laffaire-siloxane
4•idlewords•1d ago•0 comments

The Case for Free Online Books (2014)

http://from-a-to-remzi.blogspot.com/2014/01/the-case-for-free-online-books-fobs.html
63•jimsojim•1h ago•59 comments

Babel-USB: USB drive with every file

https://github.com/p2r3/babel-usb
8•LorenDB•2h ago•3 comments

'They take you out of life, out of time': a journey into Spain's cave paintings

https://www.theguardian.com/science/2026/jun/02/journey-into-spain-palaeolithic-cave-paintings-al...
43•NaOH•2d ago•19 comments

Anatomy of a high-performance EP kernel

https://fergusfinn.com/blog/anatomy-of-a-high-performance-ep-kernel/
8•kkm•2h ago•1 comments

Who Runs Your Rust Future? Hands-On Intro to Async Rust

https://aibodh.com/posts/async-rust-chapter-1-hands-on-intro-to-async-rust/
74•febin•2d ago•13 comments

The Last Evolution, by John W Campbell Jr. (1932)

https://www.gutenberg.org/files/27462/27462-h/27462-h.htm
12•cf100clunk•2h ago•0 comments

Reviving Papers with Code

https://paperswithcode.co/
169•nielz_r•2d ago•38 comments

Smudging the game disc to make speedrunning 'SpongeBob' faster

https://www.inverse.com/input/gaming/the-dirty-secret-that-makes-speedrunning-on-spongebob-a-lot-...
36•pncnmnp•16h ago•22 comments

Ask HN: Are most corporate SWE jobs performative?

132•hnthrow10282910•5h ago•150 comments

macOS Container Machines

https://github.com/apple/container/blob/main/docs/container-machine.md
1121•timsneath•18h ago•389 comments

AWS Bedrock to require sharing data with Anthropic for Mythos and future models

363•TomAnthony•10h ago•214 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.