Jean-Luc Makiola
85104f3687
- SUMMARY.md with execution results - STATE.md updated with plan 05 completion - ROADMAP.md updated with phase 14 progress - DB-04 requirement marked complete
94 lines
3.0 KiB
Markdown
94 lines
3.0 KiB
Markdown
---
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phase: 14-postgresql-migration
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plan: 05
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subsystem: database
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tags: [sqlite, postgres, migration, data-migration, bun-sqlite]
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# Dependency graph
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requires:
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- phase: 14-01
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provides: PostgreSQL schema definitions (Drizzle pgTable)
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provides:
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- One-time SQLite-to-PostgreSQL data migration script
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- db:migrate-from-sqlite npm script
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affects: [14-06, deployment, upgrade-docs]
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# Tech tracking
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tech-stack:
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added: []
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patterns: [dependency-ordered table migration, unix-to-Date conversion, serial sequence reset]
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key-files:
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created:
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- scripts/migrate-sqlite-to-postgres.ts
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modified:
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- package.json
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key-decisions:
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- "Used postgres.js unsafe() for sequence reset instead of drizzle-orm sql template (simpler for raw DDL)"
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- "Row-by-row insert for error tracing (per-row catch identifies failing record)"
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patterns-established:
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- "Migration scripts live in scripts/ directory"
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- "Type conversion helpers (unixToDate, intToBool) for SQLite-to-Postgres data transforms"
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requirements-completed: [DB-04]
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# Metrics
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duration: 2min
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completed: 2026-04-04
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---
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# Phase 14 Plan 05: SQLite-to-Postgres Migration Script Summary
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**One-time data migration script converting all 13 tables from SQLite to PostgreSQL with timestamp/boolean type conversions and serial sequence reset**
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## Performance
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- **Duration:** 2 min
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- **Started:** 2026-04-04T10:26:29Z
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- **Completed:** 2026-04-04T10:28:29Z
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- **Tasks:** 1
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- **Files modified:** 2
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## Accomplishments
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- Created standalone migration script that reads SQLite and writes to PostgreSQL
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- Handles all type conversions: unix epoch integers to Date objects, integer booleans to native booleans
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- Migrates tables in FK dependency order (4 waves: no-FK, FK-to-parents, FK-to-intermediates, junction tables)
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- Resets all 11 serial sequences after migration to prevent duplicate key errors
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- Added `db:migrate-from-sqlite` npm script for easy invocation
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Create SQLite-to-Postgres migration script** - `b4c3813` (feat)
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## Files Created/Modified
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- `scripts/migrate-sqlite-to-postgres.ts` - One-time migration script with type conversions and sequence reset
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- `package.json` - Added db:migrate-from-sqlite script
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## Decisions Made
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- Used `postgres.js` `unsafe()` for raw `setval` queries instead of drizzle-orm `sql` template -- simpler for dynamic table name interpolation in DDL
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- Row-by-row inserts instead of bulk for better error diagnostics (each failed row logs its ID)
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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- Biome lint flagged unused `sql` import from drizzle-orm (used `pg.unsafe()` instead) and unnecessary suppression comments -- removed both
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- Migration script ready for use during SQLite-to-Postgres upgrade
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- Requires DATABASE_URL env var and existing SQLite file
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- Can be tested against a dev Postgres instance with `docker compose up`
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---
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*Phase: 14-postgresql-migration*
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*Completed: 2026-04-04*
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