HackerNoon

How MySQL Implicit Type Conversion Turned an Indexed Query Into a 7M-Row Scan

A missing quote made MySQL scan 7.2 million rows. Here's how EXPLAIN exposed the problem and what it taught us about safe ...

"It works on my machine"—9 places where the same code and commands silently take on different meanings depending on where they run

"It works on my machine." I'm sure you've said it or heard it at least once—in code reviews, in chat, or during incident post ...

17 Items to Check Before Upgrading to PostgreSQL 19—The One pg_upgrade --check Misses, and Inspection SQL (Measured on 18.6 and 19beta4)

The release notes for PostgreSQL 19 (scheduled for official release in October 2026) contain a section titled "Migration to ...
letsdatascience

Cohesity tells LDS what an AI agent rollback cannot undo

Restoring an AI agent's memory cannot recall an email it has already sent. In written answers to LDS, Cohesity's Swami Ramany ...