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schema-diff

Compare two schema states and surface the risky changes. Use before applying migrations or after a model change.

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Archive228/loopkit
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29 de junio de 2026 a las 21:52
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SKILL.md
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name
schema-diff
description
Compare two schema states and surface the risky changes. Use before applying migrations or after a model change.
when_to_use
reviewing a migration, "what changed in the schema", pre-deploy check
# Schema Diff Diff old vs new schema. Flag by risk: - **Destructive** (high): dropped column/table, narrowed type, new NOT NULL on existing rows, dropped index a query relies on. - **Locking** (high at scale): index without CONCURRENTLY, type change that rewrites the table. - **Safe**: new nullable column, new table, new index CONCURRENTLY. For each destructive change: is data lost? is it reversible? is there a backfill? Output a risk-ranked list and a go/no-go with the safe rollout order.
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