sql-migration-generator

Sql Migration Generator - Auto-activating skill for Backend Development. Triggers on: sql migration generator, sql migration generator Part of the Backend Development skill category.

Install with Tessl CLI

npx tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill sql-migration-generator

What are skills?

1.04x

Review — 3%

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Evaluation — 93%

↑ 1.04x

Agent success when using this skill

Validation — 9 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

96%

Subscription Billing Schema Migration

Production-ready migration files

Criteria

Without context

With context

Separate up and down files

100%

Versioned naming

100%

All three tables created

100%

Primary keys defined

100%

Foreign key constraints

100%

At least one index

100%

Appropriate NOT NULL constraints

100%

Correct rollback order

100%

Monetary data types

100%

Idempotent guards

50%

No placeholder text

100%

Without context: $0.2925 · 1m 11s · 20 turns · 21 in / 3,797 out tokens

With context: $0.4998 · 1m 39s · 31 turns · 30 in / 5,858 out tokens

92%

Name Column Split Migration

Step-by-step data migration sequencing

Criteria

Without context

With context

Sequential steps documented

100%

New columns added first

100%

Data copied in migration

100%

Old column dropped last

80%

100%

Rollback migration present

100%

Rollback reconstructs data

40%

100%

Transaction used

100%

Column existence check or safe DDL

50%

Step explanations in plan

100%

Correct table and column names

100%

Without context: $0.1652 · 1m · 12 turns · 12 in / 3,014 out tokens

With context: $0.4774 · 1m 47s · 27 turns · 1,828 in / 5,740 out tokens

92%

Audit Trail Schema for Financial Records

Migration output validation and standards

Criteria

Without context

With context

Audit table created

100%

Before/after values stored

100%

Primary key on audit table

100%

Timestamp field is timezone-aware

100%

Index on timestamp

100%

Index on entity/row identifier

100%

Index on performed_by

100%

NOT NULL on critical columns

100%

Down migration included

Validation notes present

100%

No placeholder SQL

100%

Without context: $0.3655 · 1m 50s · 18 turns · 18 in / 6,031 out tokens

With context: $0.4714 · 2m 4s · 25 turns · 58 in / 6,651 out tokens

Evaluated: 4 days ago
Agent: Claude Code
Model: Unknown

Table of Contents

Subscription Billing Schema Migration Name Column Split Migration Audit Trail Schema for Financial Records

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