Individual skill

database-migrator

Migrates databases between providers (Postgres, MySQL, Supabase, PlanetScale, MongoDB). Reads source schema, generates migration scripts, handles data type mapping, foreign keys, indexes, triggers, stored procedures. Validates migration with row counts and checksums. Generates migration-plan.md with step-by-step execution guide, rollback procedures, estimated downtime.

database-migrator/SKILL.md

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Repository stars (not skill ratings): 425
Repository last updated: Oct 20, 2026
License: MIT

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SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
SKILL.mdcore · 5,528 bytes
references/data-migration.mddoc · 3,007 bytes
references/edge-cases.mddoc · 5,197 bytes
references/migration-plan-template.mddoc · 10,551 bytes
references/rollback-and-downtime.mddoc · 4,756 bytes
references/schema-discovery.mddoc · 12,155 bytes
references/script-generation.mddoc · 6,823 bytes
references/type-mapping.mddoc · 6,743 bytes
references/validation.mddoc · 4,195 bytes

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# Database Migrator

Move schemas, data, and logic between database providers. This is a cross-provider migration engine, not a schema designer: it handles data type incompatibilities, provider-specific SQL dialects, foreign key ordering, sequence and auto-increment translation, trigger rewrites, and stored procedure conversion. It validates with row counts and checksums and produces an auditable migration-plan.md.

## Contents

- references/schema-discovery.md -- Extraction queries for relational, MongoDB, Supabase, and PlanetScale sources.
- references/type-mapping.md -- Data type maps (PG/MySQL/Mongo) and SQL function translation.
- references/script-generation.md -- DDL, sequence, trigger, procedure, and view translation.
- references/data-migration.md -- Export, transform, and import commands per provider.
- references/validation.md -- Row count, checksum, FK integrity, index, and spot-check queries.
- references/rollback-and-downtime.md -- Rollback scripts, backup/restore, downtime estimation.
- references/migration-plan-template.md -- Full migration-plan.md output template.
- references/edge-cases.md -- Large tables, lossy mappings, document flattening, multi-schema, quality checklist.