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comparing-database-schemas

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Process use when you need to work with schema comparison. This skill provides database schema diff and sync with comprehensive guidance and automation. Trigger with phrases like "compare schemas", "diff databases", or "sync database schemas".

plugins/database/database-diff-tool/skills/comparing-database-schemas/SKILL.md

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Nov 12, 2026
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MIT

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# Database Diff Tool

## Overview

Compare database schemas between two environments (development vs. staging, staging vs.

## Prerequisites

- Connection credentials to both source and target databases
- `psql` or `mysql` CLI configured to connect to both environments
- Read access to `information_schema` and `pg_catalog` (PostgreSQL) or `information_schema` (MySQL)
- Permission to run `pg_dump --schema-only` for full schema extraction
- Understanding of which environment is the "source of truth" (typically the migration-managed environment)

## Instructions
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