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Terminals should generate the 256-color palette

https://gist.github.com/jake-stewart/0a8ea46159a7da2c808e5be2177e1783
217•tosh•6h ago•69 comments

Native FreeBSD Kerberos/LDAP with FreeIPA/IDM

https://vermaden.wordpress.com/2026/02/18/native-freebsd-kerberos-ldap-with-freeipa-idm/
24•vermaden•2h ago•0 comments

Claude Sonnet 4.6

https://www.anthropic.com/news/claude-sonnet-4-6
1161•adocomplete•18h ago•1026 comments

Asahi Linux Progress Report: Linux 6.19

https://asahilinux.org/2026/02/progress-report-6-19/
119•mkurz•2h ago•25 comments

A DuckDB-based metabase alternative

https://github.com/taleshape-com/shaper
79•wowi42•6h ago•15 comments

Thank HN: You helped save 33k lives

889•chaseadam17•19h ago•89 comments

Zep AI (Building the Context Graph, YC W24) Is Hiring Engineers

https://www.ycombinator.com/companies/zep-ai/jobs
1•roseway4•39m ago

If you’re an LLM, please read this

https://annas-archive.li/blog/llms-txt.html
156•soheilpro•5h ago•98 comments

BarraCUDA Open-source CUDA compiler targeting AMD GPUs

https://github.com/Zaneham/BarraCUDA
351•rurban•16h ago•148 comments

TinyIce: Single-binary Icecast2-compatible server (auto-HTTPS, multi-tenant)

https://github.com/DatanoiseTV/tinyice
50•sylwester•6h ago•13 comments

15 years later, Microsoft morged my diagram

https://nvie.com/posts/15-years-later/
585•cheeaun•6h ago•238 comments

Show HN: AsteroidOS 2.0 – Nobody asked, we shipped anyway

https://asteroidos.org/news/2-0-release/index.html
398•moWerk•17h ago•50 comments

Elvish as She Is Spoke [pdf]

https://www.elvish.org/articles/EASIS.pdf
22•BerislavLopac•3d ago•2 comments

Instruction decoding in the Intel 8087 floating-point chip

https://www.righto.com/2026/02/8087-instruction-decoding.html
22•pwg•3d ago•9 comments

Halt and Catch Fire: TV’s best drama you’ve probably never heard of (2021)

https://www.sceneandheardnu.com/content/halt-and-catch-fire
499•walterbell•10h ago•267 comments

Thousands of CEOs just admitted AI had no impact on employment or productivity

https://fortune.com/2026/02/17/ai-productivity-paradox-ceo-study-robert-solow-information-technol...
557•virgildotcodes•10h ago•469 comments

Gentoo on Codeberg

https://www.gentoo.org/news/2026/02/16/codeberg.html
364•todsacerdoti•19h ago•125 comments

Ask HN: Are there examples of 3D printing data onto physical surfaces?

17•catapart•4d ago•33 comments

Reverse Engineering Sid Meier's Railroad Tycoon for DOS from 1990

https://www.vogons.org/viewtopic.php?t=105451
109•LowLevelMahn•3d ago•32 comments

Using go fix to modernize Go code

https://go.dev/blog/gofix
374•todsacerdoti•19h ago•74 comments

Minimal x86 Kernel Zig

https://github.com/lopespm/zig-minimal-kernel-x86
122•lopespm•12h ago•41 comments

Show HN: Breadboard – A modern HyperCard for building web apps on the canvas

https://breadboards.io/
41•simquat•1d ago•1 comments

The Secret Life of Vector Generators (2001)

https://jmargolin.com/vgens/vgens.htm
17•mosura•2d ago•1 comments

HackMyClaw

https://hackmyclaw.com/
326•hentrep•19h ago•163 comments

So you want to build a tunnel

https://practical.engineering/blog/2026/2/17/so-you-want-to-build-a-tunnel
235•crescit_eundo•19h ago•88 comments

Async/Await on the GPU

https://www.vectorware.com/blog/async-await-on-gpu/
204•Philpax•19h ago•53 comments

How I use Obsidian (2023)

https://stephango.com/vault
111•hisamafahri•14h ago•61 comments

Rathbun's Operator

https://crabby-rathbun.github.io/mjrathbun-website/blog/posts/rathbuns-operator.html
88•bb88•12h ago•91 comments

Semantic Diffusion (2006)

https://martinfowler.com/bliki/SemanticDiffusion.html
19•andsoitis•2d ago•13 comments

Show HN: I wrote a technical history book on Lisp

https://berksoft.ca/gol/
220•cdegroot•20h ago•79 comments
Open in hackernews

Anatomy of a SQL Engine

https://www.dolthub.com/blog/2025-04-25-sql-engine-anatomy/
168•ingve•9mo ago

Comments

jimbokun•9mo 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•9mo 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•9mo ago
Not necessarily, I see native speakers completely ignore this a lot.

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

kreetx•9mo 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•9mo 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•9mo ago
I prefer "ess queue ell" these days, but the first DBA I ever worked with pronounced it "squirrel".
gopalv•9mo 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•9mo ago
This is really great!!
gavinray•9mo 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•9mo 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•9mo 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•9mo 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•9mo ago
This is a SQL to X library, though. I don’t think it’s what you need.
gavinray•9mo 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•9mo 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•9mo 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.