Query Course
Query Course Mastery builds your SQL prowess for real tech setups. Through an online learning platform example, you'll design schemas, handle safe updates, develop robust reports, and optimise indexes to ensure precise analytics and dependable data handling in production systems.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
This course equips you with skills to craft strong database schemas, write accurate SQL queries, and create dependable reports for practical learning platforms. You'll gain expertise in joins, aggregations, window functions, subqueries, and date filtering, while learning to boost performance via indexing, EXPLAIN plans, and materialized views. It also addresses secure updates, deletes, transactions, and polished SQL outputs ready for review in data-heavy environments.
Elevify advantages
Develop skills
- Secure SQL updates and deletes to safeguard live data in operational systems.
- Craft reporting queries for tech platforms like leaderboards, revenue, and usage dashboards.
- Design relational schemas for users, courses, payments, and progress tracking.
- Optimise SQL performance with targeted indexes and efficient query patterns.
- Produce production-grade SQL including clean DDL, test data, and review-ready queries.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
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