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Is BGP Safe Yet? No. Test Your ISP

https://isbgpsafeyet.com/
131•janandonly•2h ago•50 comments

Claude Code Unpacked : A visual guide

https://ccunpacked.dev/
845•autocracy101•10h ago•308 comments

CERN levels up with new superconducting karts

https://home.cern/news/news/engineering/cern-levels-new-superconducting-karts
289•fnands•8h ago•61 comments

Consider the Greenland Shark (2020)

https://www.lrb.co.uk/the-paper/v42/n09/katherine-rundell/consider-the-greenland-shark
43•mooreds•5d ago•9 comments

Intuiting Pratt Parsing

https://louis.co.nz/2026/03/26/pratt-parsing.html
92•signa11•2d ago•25 comments

Show HN: CLI to order groceries via reverse-engineered REWE API (Haskell)

https://github.com/yannick-cw/korb
162•wazHFsRy•2d ago•59 comments

Claude Wrote a Full FreeBSD Remote Kernel RCE with Root Shell (CVE-2026-4747)

https://github.com/califio/publications/blob/main/MADBugs/CVE-2026-4747/write-up.md
159•ishqdehlvi•10h ago•61 comments

Ada and Spark on ARM Cortex-M – A Tutorial with Arduino and Nucleo Examples

http://inspirel.com/articles/Ada_On_Cortex.html
14•swq115•4d ago•1 comments

Show HN: Sycamore – next gen Rust web UI library using fine-grained reactivity

https://sycamore.dev
62•lukechu10•3h ago•43 comments

Chess in SQL

https://www.dbpro.app/blog/chess-in-pure-sql
130•upmostly•3d ago•25 comments

New Patches Allow Building Linux IPv6-Only, Option to Deprecate "Legacy" IPv4

https://www.phoronix.com/news/Linux-IPv6-IPv4-Legacy-Knobs
64•Bender•2h ago•35 comments

A dot a day keeps the clutter away

https://scottlawsonbc.com/post/dot-system
449•scottlawson•18h ago•132 comments

Wasmer (YC S19) Is Hiring – Rust and DevRel Positions

https://www.workatastartup.com/companies/wasmer
1•syrusakbary•3h ago

OnlyOffice kills Nextcloud partnership for forking its project without approval

https://www.neowin.net/news/onlyoffice-suspends-nextcloud-partnership-over-unapproved-euro-office...
31•bundie•1h ago•17 comments

Show HN: 1-Bit Bonsai, the First Commercially Viable 1-Bit LLMs

https://prismml.com/
340•PrismML•18h ago•134 comments

TinyLoRA – Learning to Reason in 13 Parameters

https://arxiv.org/abs/2602.04118
216•sorenjan•5d ago•39 comments

I Quit. The Clankers Won

https://dbushell.com/2026/04/01/i-quit-the-clankers-won/
305•domysee•6h ago•318 comments

TruffleRuby

https://chrisseaton.com/truffleruby/
169•tosh•3d ago•22 comments

MiniStack (replacement for LocalStack)

https://ministack.org/
280•kerblang•19h ago•56 comments

AI has suddenly become more useful to open-source developers

https://www.zdnet.com/article/maybe-open-source-needs-ai/
23•CrankyBear•1h ago•10 comments

Tom Scott is back on YouTube [video]

https://www.youtube.com/watch?v=Yz3lSKgz4q8
6•latexr•13m ago•1 comments

The Claude Code Source Leak: fake tools, frustration regexes, undercover mode

https://alex000kim.com/posts/2026-03-31-claude-code-source-leak/
1303•alex000kim•1d ago•532 comments

Neanderthals survived on a knife's edge for 350k years

https://www.science.org/content/article/neanderthals-survived-knife-s-edge-350-000-years
208•Hooke•14h ago•155 comments

Bring Back MiniDV with This Raspberry Pi FireWire Hat

https://www.jeffgeerling.com/blog/2026/minidv-with-raspberry-pi-firewire-hat/
96•ingve•3d ago•17 comments

OpenAI demand sinks on secondary market as Anthropic runs hot

https://www.bloomberg.com/news/articles/2026-04-01/openai-demand-sinks-on-secondary-market-as-ant...
94•helsinkiandrew•1h ago•33 comments

4D Doom

https://github.com/danieldugas/HYPERHELL
255•chronolitus•4d ago•64 comments

Slop is not necessarily the future

https://www.greptile.com/blog/ai-slopware-future
285•dakshgupta•1d ago•460 comments

Show HN: Baton – A desktop app for developing with AI agents

https://getbaton.dev/
52•tordrt•3h ago•41 comments

The Document Foundation ejects its core developers

https://www.collaboraonline.com/blog/tdf-ejects-its-core-developers/
20•hackernewsblues•4h ago•4 comments

OpenAI closes funding round at an $852B valuation

https://www.cnbc.com/2026/03/31/openai-funding-round-ipo.html
495•surprisetalk•19h ago•457 comments
Open in hackernews

Anatomy of a SQL Engine

https://www.dolthub.com/blog/2025-04-25-sql-engine-anatomy/
168•ingve•11mo ago

Comments

jimbokun•11mo 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•11mo 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•11mo ago
Not necessarily, I see native speakers completely ignore this a lot.

Have you ever considered pronouncing it as squirrel by the way?

kreetx•11mo 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•11mo 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•11mo ago
I prefer "ess queue ell" these days, but the first DBA I ever worked with pronounced it "squirrel".
gopalv•11mo 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•11mo ago
This is really great!!
gavinray•11mo 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•11mo 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•11mo 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•11mo 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•11mo ago
This is a SQL to X library, though. I don’t think it’s what you need.
gavinray•11mo 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.
genai-analyst•10mo 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.

KyleBrandt•11mo 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.