Beginner SQL Course
This beginner SQL course teaches essential querying skills for subscription and payment data, covering SELECT, joins, aggregates, dates, NULLs, and defensive SQL practices for accurate analytics.

flexible workload from 4 to 360h
valid certificate in your country
What will I learn?
Beginner SQL Course equips you with practical skills to query real subscription and payment data quickly. You will learn SELECT, WHERE, ORDER BY, joins, and set operations, then advance to GROUP BY, aggregates, and HAVING for strong reporting. You will also manage dates, NULLs, and open-ended subscriptions, plus defensive query design and testing to ensure your SQL is accurate, efficient, and prepared for daily analytics.
Elevify advantages
Develop skills
- Write clean SELECT queries: shape, filter, and sort data with confidence.
- Master joins quickly: combine tables using INNER, LEFT, RIGHT, and FULL JOINs.
- Analyse metrics swiftly: aggregate with GROUP BY, HAVING, and core functions.
- Handle real-world dates and NULLs: fix messy CSV data in subscription tables.
- Build reliable SQL: test queries, avoid double-counting, and tune performance.
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
Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...

Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos help a lot with learning.

André FelipePrompt Engineering Student
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