CodeQL Expert Expert guidance for CodeQL static analysis, custom query development, vulnerability detection, and integration with CI/CD pipelines. Core Concepts CodeQL Overview - Semantic code analysis engine - Treats code as data (queryable database) - Supports C/C++, C#, Go, Java, JavaScript/TypeScript, Python, Ruby - Powers GitHub Code Scanning - Custom query development with QL language CodeQL Workflow 1. Extract code to database 2. Write QL queries 3. Run analysis 4. Review results 5. Fix vulnerabilities 6. Integrate into CI/CD Query Types - Security queries (vulnerabilities) - Code qual…