SQL

Work with the SQLite database layer including FTS5, sqlite-vec, and schema operations. Use for database queries, indexing issues, or storage debugging.

Consult Oracle knowledge base for decisions, patterns, and wisdom. Use when user asks "should I", "what's the best way", "have we done this before", "remind me about", "what's the pattern". Use PROACTIVELY before starting new work, making decisions, or when stuck. Oracle is the external brain - always consult before reinventing.

PostgreSQL patterns for reviewing migrations and writing efficient queries. Use when reviewing Alembic migrations, optimizing queries, or debugging database issues.

Write efficient, secure database queries using ORMs or raw SQL, preventing N+1 problems, SQL injection, and performance issues. Use this skill when writing database queries, implementing data access layers, creating repository patterns, or optimizing query performance in service files, query builders, or data access objects. Apply this skill when using parameterized queries, implementing eager loading to avoid N+1 queries, selecting only needed columns, adding WHERE/JOIN/ORDER BY clauses, or working with query optimization, indexes, and database performance tuning. This skill ensures queries use proper SQL injection prevention, implement transactions for data consistency, cache expensive queries appropriately, and follow best practices for query timeouts, connection pooling, and database resource management.

Database schema validation tools - SQL syntax checking, constraint validation, naming convention enforcement, and schema integrity verification. Use when validating database schemas, checking migrations, enforcing naming conventions, verifying constraints, or when user mentions schema validation, migration checks, database best practices, or PostgreSQL validation.

Infrastructure guidelines for A4C-AppSuite. Covers idempotent Supabase SQL migrations with RLS policies, Kubernetes deployments for Temporal workers, CQRS projections with PostgreSQL triggers, and AsyncAPI contract-first event design. Emphasizes safety, idempotency, and SQL-first development.

Master sql databases & query optimization. Production-ready code examples, best practices, and real-world applications.

Provides patterns and guidance for implementing user-scoped data filtering and multi-tenancy in web applications. Use this skill when you need to: (1) Restrict data access based on user identity, (2) Implement ownership checks for database operations, (3) Build multi-tenant applications with organization-level data scoping, (4) Implement admin bypass for viewing all data, (5) Create audit trails for data access. This skill focuses on Python, FastAPI, and SQLAlchemy.

Tracks untrusted input propagation from sources to sinks in binary code to identify injection vulnerabilities. Use when analyzing data flow, tracing user input to dangerous functions, or detecting command/SQL injection.

Expert knowledge for implementing event sourcing in Composable Rust. Use when implementing event-sourced aggregates, working with EventStore trait or PostgreSQL, designing event schemas, implementing state reconstruction, dealing with optimistic concurrency and version tracking, or questions about event sourcing, CQRS, and persistence patterns.

Execute SQL queries against the local PostgreSQL database. Accepts raw SQL or natural language queries that get converted to SQL automatically. Use for inspecting data, running queries, or managing the Kindle notes database.

Implements database integration patterns for Rust backends using SQLx and SeaORM. Use when setting up database connections, writing queries, defining entities, managing migrations, or configuring connection pools. Covers compile-time checked SQL, ORM patterns, and N+1 prevention.

Supabase and Postgres database operations for SignalRoom. Use for database queries, schema inspection, connection troubleshooting, or checking loaded data.

Database integration with SQLite for beginners

SQLite database for Israeli Tech Nano-Influencers with direct sqlite3 command-line access. Execute any SQL query or inspect schema. Simple and agent-friendly.

Create, apply, and rollback goose migrations for SQLite using the embedded migrate tool.

Generate pytest test templates for UTXOracle modules following TDD patterns. Automatically creates RED phase tests with async fixtures, coverage markers, and integration test stubs.

Produces excellence-grade EU grant narratives, budget justifications, andscoring diagnostics that consistently reach ≥4.6/5 (13.8/15 Horizon scale).Integrates constitutional AI framing, Oracle-validated evidence, and EU costcompliance to feed Grant Application Assembler and client review workflows.

PostgreSQL development for Python with full-text search (tsvector, tsquery, BM25 via pg_search), vector similarity (pgvector with HNSW/IVFFlat), JSONB and array indexing, and production deployment. Use when creating search features, storing AI embeddings, querying vector similarity, optimizing PostgreSQL indexes, or deploying to AWS RDS/Aurora, GCP Cloud SQL/AlloyDB, or Azure. Covers psycopg2, psycopg3, asyncpg, SQLAlchemy integration, Docker development setup, and index selection strategies. Triggers: "PostgreSQL search", "pgvector", "BM25 postgres", "JSONB index", "psycopg", "asyncpg", "PostgreSQL Docker", "AlloyDB vector". Does NOT cover: DBA administration (backup, replication, users), MySQL/MongoDB/Redis, schema design theory, stored procedures.

Sequelize migration patterns and best practices for PostgreSQL schema changes. Use when creating migrations, modifying tables, managing indexes, or handling data migrations safely.