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

from 4 to 360h flexible workload
certificate valid in your country
What will I learn?
This course equips you to craft solid database schemas, write accurate SQL queries, and develop 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 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 environments.
- 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.
- Deliver production-grade SQL including clean DDL, test 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 have certificates?
Are the courses free?
What is the course workload?
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 EAD or online course and how does it work?
Course in PDF