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Show HN: I built a tool to track ad-hoc SQL before they break schemas

https://app.tesser.cloud/login/?next=/
1•ANKITkumar77•4h ago
I spent years as a data engineer debugging dashboards broken by untracked queries—Slack snippets, notebooks, and random scripts. Existing tools focus on enterprise lineage, not the daily pain points.

So leveraging my Python skills I learned django and built Tesser v1 to: - Track ad-hoc queries (Slack/Jupyter) that modify production data - Show which dashboards/tables they broke - Visualize potential impacts before query runs - Can fetch lineage data from WHs, databases and BI.

When someone runs UPDATE order_items SET price=0, Tesser: - Flags the query source (Slack user/notebook) - Shows affected dashboards - Estimates data impact

Built for: - Freelancers managing client data - Lean startup data teams without tooling budgets - Anyone tired of "who changed this?!" forensics

(HN: Would this solve real pain for you? Honest feedback welcome) Demo:

A Sad Day for Physical Bitcoin Collectors

https://bitcointalk.org/index.php?topic=5543336.0
1•walterbell•47s ago•0 comments

1.58bit LLM Optimised Tensor Core

https://github.com/microsoft/T-MAC
1•galeos•1m ago•0 comments

Bezos-backed methane tracking satellite is lost in space

https://www.reuters.com/business/energy/bezos-backed-methane-tracking-satellite-is-lost-space-2025-07-01/
1•franksvalli•3m ago•0 comments

New model 'cypher-alpha' on Openrouter

https://openrouter.ai/openrouter/cypher-alpha:free
1•chrismustcode•3m ago•0 comments

Show HN: TrustyPost – An All-in-One Creator Toolkit (Design, AI, Scheduling)

1•terryosayawe•5m ago•0 comments

Love-hate relationship you grow with your product

1•yogini•6m ago•0 comments

Don't buy a drive blind – learn which type fits your needs

https://huzit.net/welche-festplatte-ist-die-beste-wahl-hdd-sata-ssd-oder-nvme/
1•RobotHead•7m ago•0 comments

China successfully tests hypersonic aircraft, maybe at Mach 12

https://www.theregister.com/2025/07/01/china_successfully_tests_hypersonic_aircraft/
1•rntn•8m ago•0 comments

Understanding Artifact Processing in ReARM

https://rearmhq.com/blog/2025-07-01-understanding-artifact-processing-in-rearm
1•taleodor•11m ago•0 comments

How much (little) are the AI companies making?

https://pluralistic.net/2025/06/30/accounting-gaffs/#artificial-income
1•Michelangelo11•11m ago•0 comments

Soft Ware for Hard Power (2024)

https://sofiechan.com/p/890
1•anon_wyly•13m ago•0 comments

Researchers Turn Plastic into Paracetamol

https://cen.acs.org/biological-chemistry/biotechnology/Researchers-turn-plastic-paracetamol/103/web/2025/06
1•gmays•14m ago•0 comments

MCP for Skeptics

https://www.speakeasy.com/mcp/mcp-for-skeptics
1•ritzaco•14m ago•0 comments

Ask HN: How are you evaluating your LLMs in production?

1•ReDeiPirati•16m ago•1 comments

Sam Altman Slams Meta's AI Talent Poaching: 'Missionaries Will Beat Mercenaries'

https://www.wired.com/story/sam-altman-meta-ai-talent-poaching-spree-leaked-messages/
3•spenvo•18m ago•0 comments

Ask HN: Does the world economy run on sales people?

1•ciwolex•18m ago•0 comments

Wayback Machine: One Trillion Web Pages Archived

https://blog.archive.org/2025/07/01/wayback-machine-to-hit-once-in-a-generation-milestone-this-october-one-trillion-web-pages-archived/
3•mikae1•18m ago•0 comments

Amazon launches a new AI foundation model to power its robotic fleet

https://www.aboutamazon.com/news/operations/amazon-million-robots-ai-foundation-model
2•srijan4•19m ago•0 comments

The Hoyle State (2021)

https://johncarlosbaez.wordpress.com/2021/02/04/the-hoyle-state/
8•gone35•19m ago•0 comments

ICEBlock – See Something, Tap Something

https://www.iceblock.app
4•pavel_lishin•20m ago•0 comments

After 48 years, Zilog is killing the classic standalone Z80 microprocessor chip

https://arstechnica.com/gadgets/2024/04/after-48-years-zilog-is-killing-the-classic-standalone-z80-microprocessor-chip/
2•airhangerf15•20m ago•1 comments

Dirac Large Numbers Hypothesis

https://en.wikipedia.org/wiki/Dirac_large_numbers_hypothesis
1•gone35•21m ago•0 comments

Nothing Phone (3) and Headphone (1) are here

https://nothing.community/d/35792-phone-3-and-headphone-1-are-here
1•SilverElfin•22m ago•0 comments

From Tyson to TikTok: the boxing fan generational gap is widening

https://www.theguardian.com/sport/2025/jun/17/boxing-young-fan-base-decline-future-us
1•PaulHoule•29m ago•0 comments

ECB commits to distributed ledger technology settlement plans

https://www.ecb.europa.eu/press/pr/date/2025/html/ecb.pr250701~f4a98dd9dc.en.html
1•wslh•29m ago•0 comments

Are AI Bots Behaving?

https://goodaibots.com/
2•tzury•29m ago•0 comments

Why Mushrooms Are Starting to Replace Everything [video]

https://www.youtube.com/watch?v=jI2LC3WTryw
1•simonebrunozzi•30m ago•0 comments

Show HN: Runik – Turn fan wikis into e-reader dictionaries

https://github.com/Runik-3/core
1•skoutXII•30m ago•0 comments

Foyer aims to be an efficient and user-friendly hybrid cache lib in Rust

https://github.com/foyer-rs/foyer
1•Sheldon_fun•33m ago•0 comments

Performance and Power of the Low-Cost EPYC 4005 vs. Original EPYC 7601 Zen 1

https://www.phoronix.com/review/amd-epyc-4005-server
1•vok•33m ago•0 comments