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Visual Diff Free
users — 4 columns added
orders — 2 columns modified
old_logs — table removed
audit_trail — new table
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Every plan gets the full ALTER TABLE script for every change — copy, paste, deploy. No upsell required.

Migration SQL
ALTER TABLE users ADD COLUMN phone VARCHAR(20);
ALTER TABLE users ADD COLUMN preferences JSONB DEFAULT '{}';
ALTER TABLE orders ALTER COLUMN total TYPE DECIMAL(12,2);
CREATE INDEX CONCURRENTLY idx_users_phone ON users(phone);
CREATE TABLE audit_logs (...);
✓ 12 changes generated PostgreSQL dialect
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Breaking change detection

Every diff gets a 0–100 risk score and flags production-killing changes: dropped columns, type mismatches, lost constraints — on every plan.

Risk Assessment
72/100
High Risk
⚠️ BREAKING CHANGE
Dropped column legacy_id is referenced by view user_profiles. The view will fail after deployment.
⚠️ WARNING
Adding NOT NULL to email without a DEFAULT will fail on existing rows.
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🐬 PostgreSQL
🐬 MySQL
📦 SQLite
## Schema Diff Report

**Tables:** 3 added, 2 modified, 1 removed
**Risk Score:** 72/100 (High)
**Breaking Changes:** 2

### Changes
| Table | Change | Type |
|-------|--------|------|
| users | +phone | Added |
| orders | ~total | Modified |
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Rollback safety net

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Rollback SQL Auto-generated
-- Reverse all changes if deployment fails
ALTER TABLE users DROP COLUMN phone;
ALTER TABLE users DROP COLUMN preferences;
ALTER TABLE orders ALTER COLUMN total TYPE DECIMAL(10,2);
DROP INDEX idx_users_phone;
DROP TABLE audit_logs;
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Slack Alert — #database-changes
🚨 Breaking schema change detected
PR #482 · users table · risk 72/100
Dropped column legacy_id referenced by view user_profiles
Shared workspace Auto-detected

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