Backend Queries

@grimmolf/mga-soap-calculator-backend-queries

Write secure, performant database queries using parameterized statements, proper indexing, eager loading, and transaction management to prevent SQL injection and N+1 query problems. Use this skill when writing database queries, constructing SQL statements, using ORM query builders, optimizing database performance, or working with repositories, services, or DAO files that interact with databases. Applies to SELECT, INSERT, UPDATE, DELETE operations, joins, aggregations, and any code that retrieves or manipulates data from databases.