SQL Basics Course
This course provides hands-on training in essential SQL skills for querying relational databases, covering SELECT statements, filtering, joins, aggregation, and best practices for writing efficient, portable code.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
The SQL Basics Course gives you practical skills to query real relational databases fast. You will learn SELECT fundamentals, filtering, sorting, and pagination, then move into joins across multiple tables, keys, and data types. Practice core analytics patterns with aggregates, GROUP BY, and HAVING, and finish with best practices for clear, portable, and debuggable SQL across popular database systems.
Elevify advantages
Develop skills
- Master SELECT queries: pull precise data fast from any relational database.
- Filter, sort, and paginate results: build clean, production-ready SQL reports.
- Join multiple tables: combine user, course, and enrollment data with confidence.
- Aggregate data with GROUP BY: compute KPIs and analytics in a few clear queries.
- Write portable, debuggable SQL: clean style that runs on MySQL, Postgres, SQLite.
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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