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intermediate SQL Course

intermediate SQL Course
flexible workload from 4 to 360h
valid certificate in your country

What will I learn?

The Intermediate SQL Course helps you go beyond basic queries and write clean, reliable code for real reporting needs. You will practise SELECTs with strong filtering, joins, and subqueries, then master aggregation, grouping, and window functions for detailed metrics. Learn to handle dates and time-to-event calculations, design query-friendly schemas, format and document SQL clearly, and apply indexing and execution plan reading to improve performance quickly.

Elevify advantages

Develop skills

  • Advanced SELECT and filtering: write clean, accurate queries fast.
  • Aggregations and window functions: build rich per-user and per-course metrics.
  • Joins and subqueries: combine complex tables for sharp, reliable reports.
  • Date and time analytics: compute durations, cohorts, and rolling trends.
  • Indexing and EXPLAIN: tune queries for high-performance reporting workloads.

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.
Workload: between 4 and 360 hours

What our students say

Your classes are perfect. I got the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... I appreciate everything you do, I've already recommended you to others...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can switch chapters and skip content I don't need.
Mariana Ferres
Mariana FerresPhotography Student
I like the content and the way the videos are presented and transcribed, which speeds up the process!
Luciana Alvarenga
Luciana AlvarengaNail Design Student
The platform is fast and easy to use. The variety of content and the extra videos really help with learning.
Giulio Carlo
Giulio CarloPrompt Engineering Student

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