Query Course
Query Course Mastery helps you excel in SQL for real-world technology setups. Through a case study of an online learning platform, you will learn to design schemas, perform safe updates, create impactful reports, and optimise indexes to ensure precise analytics and trustworthy 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 create strong database schemas, craft accurate SQL queries, and develop dependable reports for practical learning platforms. You will gain expertise in joins, aggregations, window functions, subqueries, and date filtering, followed by performance optimisation using indexing, EXPLAIN plans, and materialised views. It also includes 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 environments.
- Craft reporting queries for technology products like leaderboards, revenue, and usage dashboards.
- Design relational schemas to effectively model users, courses, payments, and progress tracking.
- Optimise SQL performance by implementing indexes and efficient read patterns for speedy analytics.
- Produce production-grade SQL assets including clean DDL, sample data, and review-friendly 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 workload.What our students say
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