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Show HN: Ant – A JavaScript runtime and ecosystem

https://antjs.org
130•theMackabu•2h ago•52 comments

Nvidia, CoreWeave, and Nebius: Inside the Circular Financing of the GPU Boom

https://io-fund.com/ai-stocks/nvidia-coreweave-nebius-circular-financing-gpu-boom
116•adletbalzhanov•5h ago•39 comments

We scaled PgBouncer to 4x throughput

https://clickhouse.com/blog/pgbouncer-clickhouse-managed-postgres
159•saisrirampur•7h ago•28 comments

RISCBoy is an open-source portable games console, designed from scratch

https://github.com/Wren6991/RISCBoy
5•mariuz•45m ago•1 comments

UPI: Anatomy of a Payment Transaction

https://timeseriesofindia.com/economy/reads/upi-architecture/
63•prtk25•6h ago•21 comments

Prefer strict tables in SQLite

https://evanhahn.com/prefer-strict-tables-in-sqlite/
178•ingve•5h ago•72 comments

The early History of the Singular Value Decomposition (1993) [pdf]

https://www.math.ucdavis.edu/~saito/courses/229A/stewart-svd.pdf
79•wolfi1•7h ago•40 comments

Biff.graph: structure your Clojure codebase as a queryable graph

https://github.com/jacobobryant/biff/tree/v2.x/libs/graph
65•jacobobryant•4d ago•2 comments

ZeroFS vs. Amazon S3 Files

https://www.zerofs.net/blog/zerofs-vs-aws-s3-files/
31•cbrewster•4h ago•10 comments

Show HN: Learn by rebuilding Redis, Git, a database from scratch

https://shipthatcode.com
97•acley•9h ago•33 comments

Female US rower completes historic solo journey from California to Hawaii

https://www.theguardian.com/us-news/2026/jul/04/california-hawaii-rowing-solo-journey
204•speckx•5h ago•72 comments

Show HN: Orbit – AR satellite tracker, watch 15k+ objects

https://nagylukas.github.io/orbit.html
41•lukas9•6h ago•11 comments

How to hide from killer drones

https://www.economist.com/science-and-technology/2026/07/08/how-to-hide-from-killer-drones
82•pseudolus•4h ago•106 comments

Billions of Sketches Reveal Hidden Cultural Variation in Human Concepts

https://arxiv.org/abs/2607.07267
4•Anon84•2d ago•0 comments

Lost and Found

https://walzr.com/lost-and-found
46•walz•5d ago•13 comments

Sixtyfour (YC P25) Is Hiring

https://www.ycombinator.com/companies/sixtyfour/jobs/bIbgQkL-operations-associate-data-samples-cu...
1•HPMOR•5h ago

Show HN: Earth Game – An offline CLI for turning life goals into quests

https://github.com/skorotkiewicz/earth-game
21•modinfo•6h ago•5 comments

The Chinese Voice Actor Forced to Prove He's Human

https://www.sixthtone.com/news/1018753
44•homarp•2h ago•7 comments

Show HN: Reame – a CPU inference server that gets faster as it runs

https://github.com/swellweb/reame
26•targetbridge•6h ago•9 comments

I used to love Claude, but the latest models are slowly ruining it

https://www.androidauthority.com/claude-latest-models-pushback-bad-3683521/
30•Brajeshwar•2h ago•34 comments

Book: RISC-V System-on-Chip Design

https://www.amazon.com/RISC-V-Microprocessor-System-Chip-Design/dp/0323994989
93•xlmnxp•2d ago•41 comments

Amber the programming language compiled to Bash/Ksh/Zsh

https://amber-lang.com/
62•_superposition_•4d ago•42 comments

Google Search lets creators know more about their reach

https://www.theverge.com/tech/961955/google-search-console-reach-platform-properties
88•herbertl•3d ago•42 comments

Digital Deli, 1984 book by early PC hackers and enthusiasts

https://www.atariarchives.org/deli/
48•achairapart•3d ago•4 comments

Taiwan's Lost 8-Bit Computer [video]

https://www.youtube.com/watch?v=IZH1rR7WogI
18•surprisetalk•3d ago•0 comments

Reverse centaurs are the answer to the AI paradox (2025)

https://pluralistic.net/2025/09/11/vulgar-thatcherism/#there-is-an-alternative
79•jason_s•5h ago•35 comments

An update on residential proxies and the scraper situation

https://lwn.net/SubscriberLink/1080822/990a8a5e2d379085/
326•chmaynard•1d ago•337 comments

AI Can't Recreate the Thrust Game (But It Can Help You Understand It)

https://www.jamesdrandall.com/posts/thrust_ai_powered_software_archaeology/
46•msephton•1d ago•26 comments

AI 2040 and the cult of intelligence

https://geohot.github.io//blog/jekyll/update/2026/07/11/ai-2040.html
160•rvz•4h ago•186 comments

Otary – Image and Geometry Python Library Now Has Tutorials

https://alexandrepoupeau.com/otary/learn/
90•poupeaua•3d ago•1 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.