← All skills

db-migration-postgres-mysql

80 / 100 · Low risk

Fine to try.

By MadBomber/experiments (GitHub) · data · 11 stars · scanned at commit 8139ff6

Migrate a Ruby on Rails application's primary database from PostgreSQL to MySQL — schema differences (JSONB to JSON, ARRAY columns, partial indexes, CHECK constraints, sequences), data export/import via pg_dump and mysqlimport or pgloader, the dual-write cutover pattern, the gem switch (pg to mysql2 or trilogy), Rails-side caveats. Use when migrating a Rails app from Postgres to MySQL, the user mentions pgloader, mysql2, trilogy, schema conversion, JSONB to JSON, ARRAY columns, partial indexes,…

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'db-migration-postgres-mysql' ] || [ -L ~/.agents/skills/'db-migration-postgres-mysql' ]; then echo 'A skill folder named db-migration-postgres-mysql already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/MadBomber/experiments' "$d" && git -C "$d" checkout --quiet '8139ff68e8895b544661aa2ba8b53268d68652bc' -- 'ai_misc/skills/rails-skills/21-db-migration-postgres-mysql' && mkdir -p ~/.agents/skills && cp -R "$d"/'ai_misc/skills/rails-skills/21-db-migration-postgres-mysql' ~/.agents/skills/'db-migration-postgres-mysql' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'db-migration-postgres-mysql' ~/.claude/skills/'db-migration-postgres-mysql' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for MadBomber/experiments shows the score of its lowest-scoring skill.

[![SkillTrust](https://zalavijaysinh.github.io/skilltrust/badges/MadBomber/experiments.svg)](https://zalavijaysinh.github.io/skilltrust/repos/MadBomber/experiments/)

Score history