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Potential session/cache leakage between workspace instances or consumer accounts

https://github.com/anthropics/claude-code/issues/74066
121•chatmasta•2h ago•45 comments

Explanation of everything you can see in htop/top on Linux

https://peteris.rocks/blog/htop/
157•theanonymousone•4h ago•21 comments

What ORMs have taught me: just learn SQL (2014)

https://wozniak.ca/blog/2014/08/03/1/index.html
40•ciconia•3d ago•25 comments

Astrophysicists Puzzle over Webb’s New Universe

https://www.quantamagazine.org/astrophysicists-puzzle-over-webbs-new-universe-20260702/
124•jnord•6h ago•69 comments

Maybe you should learn something

https://www.marginalia.nu/log/a_135_learn/
290•tylerdane•12h ago•143 comments

Postgres data stored in Parquet on S3: LTAP architecture explained

https://www.databricks.com/blog/lakebase-ltap-rethinking-database-storage
110•andrenotgiant•3d ago•34 comments

The bottleneck might be the air in the room

https://blog.mikebowler.ca/2026/07/03/co2-and-decision-making/
591•gslin•9h ago•342 comments

Breaking the Bird Barrier: Scientist Decodes Zebra Finch Language

https://www.freepressjournal.in/education/breaking-the-bird-barrier-scientist-decodes-zebra-finch...
28•yyyk•3d ago•3 comments

Performance per dollar is getting faster and cheaper

https://www.wafer.ai/blog/glm52-amd
310•latchkey•18h ago•125 comments

Leanstral 1.5: Proof abundance for all

https://mistral.ai/news/leanstral-1-5/
310•programLyrique•17h ago•87 comments

Costco is the anti-Amazon

https://phenomenalworld.org/analysis/the-anti-amazon/
491•bookofjoe•1d ago•449 comments

Night Witches – all-female Soviet aviator regiment WW2

https://en.wikipedia.org/wiki/Night_Witches
46•gverrilla•3d ago•16 comments

The Vespa at 80: Why the Italian scooter remains the coolest thing on 2 wheels

https://www.cbc.ca/news/world/vespa-italy-postwar-design-9.7252641
83•cf100clunk•3d ago•78 comments

Mir Books – Books from the Soviet Era

https://mirtitles.org
132•clmul•3d ago•64 comments

Giant trees have no trouble pumping water to top branches: new research

https://news.exeter.ac.uk/faculty-of-environment-science-and-economy/giant-trees-have-no-trouble-...
243•hhs•17h ago•107 comments

Steam Controller Auto-Charge – pilot to magnetic charging puck using CV

https://github.com/FossPrime/Steam-Controller-Auto-Charge
173•zdw•17h ago•42 comments

How working memory could give rise to consciousness

https://www.scientificamerican.com/article/how-working-memory-could-give-rise-to-consciousness/
20•bookofjoe•2h ago•16 comments

Jamesob's guide to running SOTA LLMs locally

https://github.com/jamesob/local-llm
381•livestyle•1d ago•172 comments

FreeBSD ate my RAM

https://crocidb.com/post/freebsd-ate-my-ram/
176•theanonymousone•20h ago•72 comments

MSI Center – How to gain SYSTEM privileges in seconds

https://mrbruh.com/msicenter/
124•MrBruh•15h ago•51 comments

Synthesis is harder than analysis

https://surfingcomplexity.blog/2026/07/03/synthesis-is-harder-than-analysis/
126•azhenley•13h ago•30 comments

A martian rock has lots of carbon on it, and it's not clear why

https://arstechnica.com/science/2026/07/a-martian-rock-has-lots-of-carbon-on-it-and-its-not-clear...
21•Brajeshwar•2h ago•1 comments

SearXNG: A free internet metasearch engine

https://github.com/searxng/searxng
249•theanonymousone•19h ago•69 comments

The firefighting system of the Van der Heyden brothers in 17th century Amsterdam

https://worksinprogress.co/issue/how-amsterdam-invented-the-fire-department/
118•zdw•17h ago•25 comments

Ship traces journey Spanish Armada sailors made in 1588

https://www.irishtimes.com/ireland/2026/06/30/it-is-a-huge-honour-ship-traces-journey-spanish-arm...
20•austinallegro•3d ago•10 comments

2026 Unslop AI-Written Fiction Contest Results

https://www.hyperstitionai.com/unslop-results
46•networked•10h ago•113 comments

Agentic coding notes from Galapagos Island

https://danluu.com/ai-coding/#appendix-agentic-loops-and-writing-this-post
147•gm678•11h ago•67 comments

New serious vulnerabilities spiked around release of Claude Mythos Preview

https://epoch.ai/data-insights/cve-severity-spike
141•cubefox•18h ago•61 comments

The Reports of Jim Carrey's Death Are a Failure Mode

https://tane.dev/2026/07/the-reports-of-jim-carreys-death-are-a-failure-mode/
12•taubek•4h ago•7 comments

Does average person understand that all disc media dies too?

10•kingleopold•1h ago•32 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.