GearBox/.planning/phases/14-postgresql-migration/14-05-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
14-postgresql-migration	05	database	sqlite postgres migration data-migration bun-sqlite	phase provides 14-01 PostgreSQL schema definitions (Drizzle pgTable)	One-time SQLite-to-PostgreSQL data migration script db:migrate-from-sqlite npm script	14-06 deployment upgrade-docs	added patterns dependency-ordered table migration unix-to-Date conversion serial sequence reset	created modified scripts/migrate-sqlite-to-postgres.ts package.json	Used postgres.js unsafe() for sequence reset instead of drizzle-orm sql template (simpler for raw DDL) Row-by-row insert for error tracing (per-row catch identifies failing record)	Migration scripts live in scripts/ directory Type conversion helpers (unixToDate, intToBool) for SQLite-to-Postgres data transforms	DB-04	2min	2026-04-04

Phase 14 Plan 05: SQLite-to-Postgres Migration Script Summary

One-time data migration script converting all 13 tables from SQLite to PostgreSQL with timestamp/boolean type conversions and serial sequence reset

Performance

• Duration: 2 min
• Started: 2026-04-04T10:26:29Z
• Completed: 2026-04-04T10:28:29Z
• Tasks: 1
• Files modified: 2

Accomplishments

• Created standalone migration script that reads SQLite and writes to PostgreSQL
• Handles all type conversions: unix epoch integers to Date objects, integer booleans to native booleans
• Migrates tables in FK dependency order (4 waves: no-FK, FK-to-parents, FK-to-intermediates, junction tables)
• Resets all 11 serial sequences after migration to prevent duplicate key errors
• Added db:migrate-from-sqlite npm script for easy invocation

Task Commits

Each task was committed atomically:

1. Task 1: Create SQLite-to-Postgres migration script - b4c3813 (feat)

Files Created/Modified

• scripts/migrate-sqlite-to-postgres.ts - One-time migration script with type conversions and sequence reset
• package.json - Added db:migrate-from-sqlite script

Decisions Made

• Used postgres.js unsafe() for raw setval queries instead of drizzle-orm sql template -- simpler for dynamic table name interpolation in DDL
• Row-by-row inserts instead of bulk for better error diagnostics (each failed row logs its ID)

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

• Biome lint flagged unused sql import from drizzle-orm (used pg.unsafe() instead) and unnecessary suppression comments -- removed both

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Migration script ready for use during SQLite-to-Postgres upgrade
• Requires DATABASE_URL env var and existing SQLite file
• Can be tested against a dev Postgres instance with docker compose up

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Phase: 14-postgresql-migration Completed: 2026-04-04