Query Course
Dive into advanced SQL mastery with Query Course, tailored for real-world tech setups. Through an online learning platform example, you'll design schemas, implement safe data changes, develop insightful reports, and optimise performance with indexes to ensure precise analytics and dependable operations in production systems.

4 to 360 hours flexible workload
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 efficiency through indexing, EXPLAIN plans, and materialised views. It also addresses secure updates, deletions, 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 tech platforms, including leaderboards and revenue metrics.
- Design relational schemas for users, courses, payments, and progress tracking.
- Optimise SQL performance via strategic indexing and query analysis patterns.
- Produce production-grade SQL assets like DDL scripts, sample data, and peer-reviewable 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
FAQs
Who is Elevify? How does it work?
Do the courses come with a certificate?
Are the courses free?
What is the duration of the courses?
What are the courses like?
How do the courses work?
What is the duration of the courses?
What is the cost or price of the courses?
What is an online course and how does it work?
PDF Course