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2.2 KiB
2.2 KiB
Database Migrations
What this is: Drizzle ORM migration files for SQLite database. Auto-generated SQL that applies schema changes.
Schema is NOT Here
Schema definitions are in src/database/tables.ts, NOT in this directory.
This directory only contains generated SQL migration files.
Migration Workflow
- Modify schema in
src/database/tables.ts - Generate migration:
npm run db:generate - Review SQL in new
drizzle/NNNN_name.sqlfile - Apply migration:
npm run db:migrate
File Naming
Drizzle auto-generates names: NNNN_adjective_noun.sql
0000_lush_hellion.sql0001_wide_calypso.sql- Sequential numbering ensures order
Key Commands
npm run db:generate # Generate migration from schema changes
npm run db:migrate # Apply pending migrations
npm run db:studio # Open GUI at localhost:4983
Database Location
Default: ~/.promptfoo/promptfoo.db (SQLite file)
Override the config directory with PROMPTFOO_CONFIG_DIR; the database file is promptfoo.db inside that directory.
NEVER delete the database. You may read from it but deletion destroys user data.
SQLite Limitations
Cannot drop columns - SQLite doesn't support ALTER TABLE DROP COLUMN.
Workaround: Create new table, copy data, drop old table, rename new table.
Cannot rename columns (older SQLite) - Same workaround as drop column.
Migration Best Practices
- Always review generated SQL before applying
- Never edit applied migrations - create new migration instead
- Backup before major changes:
sqlite3 ~/.promptfoo/promptfoo.db ".backup backup.db" - Test schema changes with isolated storage: unit tests should use the shared in-memory DB; CLI, resume, WAL, and path-behavior tests may use an isolated
PROMPTFOO_CONFIG_DIR
What's Stored
- Evaluation results and test configurations
- Execution traces for debugging
- Analytics data and telemetry
- User settings and preferences
Tech Stack
- Drizzle ORM - Type-safe schema and migrations
- @libsql/client - Async SQLite/libSQL driver.
getDb()returns a Promise (src/database/index.ts), so alwaysawait getDb()before database work. - SQLite / libSQL - Embedded database