SQL Crash Course
Master SQL fast with hands-on queries for real e‑commerce data. Learn SELECT, JOINs, GROUP BY, window functions, DDL, indexing, and safe data seeding across SQLite, MySQL, and PostgreSQL to power data-driven decisions in your tech career.

from 4 to 360h flexible workload
certificate valid in your country
What will I learn?
SQL Crash Course gives you fast, hands-on practice with real-world data. Learn to seed realistic test records, write precise SELECT queries, filter by dates, and manage NULLs. Build tables with solid keys and constraints, design an online store schema, master joins, GROUP BY, and window functions, and apply engine-specific tips for SQLite, MySQL, and PostgreSQL to produce accurate, reliable reports quickly.
Elevify advantages
Develop skills
- Fast SQL data seeding: insert realistic test users, orders, and products quickly.
- Core SELECT mastery: filter, sort, and slice data for real-world tech reports.
- Pro joins and subqueries: combine multiple tables for clean, accurate insights.
- Aggregations and window functions: compute KPIs, rankings, and sales summaries fast.
- Practical data modeling: design keys, constraints, and indexes for online stores.
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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