grdb

SKILL.md

Direct SQLite access using GRDB.swift - type-safe Swift wrapper with full SQLite power when you need it.

ALWAYS load reference files if there is even a small chance the content may be required. It's better to have the context than to miss a pattern or make a mistake.

| Getting Started | Setting up DatabaseQueue or DatabasePool | | Queries | Writing raw SQL, Record types, type-safe queries | | Value Observation | Reactive queries, SwiftUI integration | | Migrations | DatabaseMigrator, schema evolution | | Performance | EXPLAIN QUERY PLAN, indexing, profiling |

Use when writing raw SQL with GRDB, complex joins across 4+ tables, window functions, ValueObservation for reactive queries, or dropping down from SQLiteData for performance. Direct SQLite access for iOS/macOS with type-safe queries and migrations. Source: johnrogers/claude-swift-engineering.

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