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

from 4 to 360h flexible workload
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, 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 products like leaderboards, revenue, and usage dashboards.
- Design relational schemas to neatly model users, courses, payments, and progress.
- Optimise SQL performance with strategic indexes and efficient query 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 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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