SQL

Master relational databases from the command line. Covers SQLite, PostgreSQL, MySQL, and SQL Server with battle-tested patterns for schema design, querying, migrations, and operations.

When to Use

Working with relational databases—designing schemas, writing queries, building migrations, optimizing performance, or managing backups. Applies to SQLite, PostgreSQL, MySQL, and SQL Server.

Quick Reference

Topic	File
Query patterns	`patterns.md`
Schema design	`schemas.md`
Operations	`operations.md`

Core Rules

1. Choose the Right Database

Installs

Source

skills.volces.c…ngdavila

First Seen

Apr 21, 2026