Query Course
Query Course Mastery builds essential SQL proficiency for tech environments using an online learning platform example. Participants learn schema design, secure data modifications, advanced reporting, and performance optimisation via indexes to ensure precise analytics and dependable operations 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 craft strong database schemas, write accurate SQL queries, and create dependable reports for practical learning systems. 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 setups.
- Develop reporting queries for technology products like leaderboards and revenue dashboards.
- Design relational schemas for users, courses, payments, and progress tracking.
- Optimise SQL performance with strategic indexing and query analysis patterns.
- Produce deployment-ready SQL including DDL, test data, and peer-reviewable 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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