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---
name: db-migrations
description: "Create a database migration with Drizzle on a fresh Neon branch. Use when changing the packages/db schema or generating migrations."
category: ai-agents-and-harness
source_repo: superset-sh/superset
source_path: ".agents/skills/db-migrations/SKILL.md"
source_url: https://github.com/superset-sh/superset/blob/HEAD/.agents/skills/db-migrations/SKILL.md
---
# DB migrations
- Always spin up a new neon branch to create migrations. Update our root .env files to point at the neon branch locally.
- Use drizzle to manage the migration. You can see the schema at packages/db/src/schema. Never run a migration yourself.
- Create migrations by changing drizzle schema then running `bunx drizzle-kit generate --name="<sample_name_snake_case>"`
- `NEON_ORG_ID` and `NEON_PROJECT_ID` env vars are set in .env
- list_projects tool requires org_id passed in
- **NEVER manually edit files in `packages/db/drizzle/`** - this includes `.sql` migration files, `meta/_journal.json`, and snapshot files. These are auto-generated by Drizzle. If you need to create a migration, only modify the schema files in `packages/db/src/schema/` and ask the user to run `drizzle-kit generate`.
---
**Source:** [`superset-sh/superset`](https://github.com/superset-sh/superset) → `.agents/skills/db-migrations/SKILL.md`
