SQL

The Ultimate SQL Mastery

The most important skill in the data world. Understand how data is stored, cleaned, and queried in the real world. From zero to job-ready.

30h
Video content
295
Lectures
28
Sections
3
Real projects

SQL is one of the most in-demand skills across all data roles — and learning it is one of the fastest ways to start a data career.

This is the most comprehensive and practical SQL course I've ever created. Built from over a decade of real-world experience working on production data systems at enterprise scale.

You'll start from zero and learn everything step-by-step: from understanding databases and writing your first queries, all the way to complex joins, aggregations, subqueries, and performance tuning. But this course goes beyond theory. You'll apply what you learn on real business datasets, practice real scenarios, and build confidence by solving the same problems data teams face every day.

What you'll learn

SQL basics: databases, tables, queries, and why SQL matters
SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY and more
JOINs, UNION, INTERSECT, EXCEPT — combining tables confidently
All SQL functions: String, Numeric, Date/Time, and CASE logic
NULL handling, data cleaning, and edge case management
All Window Functions: LEAD, LAG, RANK, ROW_NUMBER and more
Advanced techniques: Subqueries, CTEs, Views, Temp Tables
Stored Procedures and Triggers for automation
Performance optimization, query tuning, and indexes
SQL for EDA (Exploratory Data Analysis) on real datasets
Build a complete SQL Data Warehouse from scratch
Advanced analytics techniques using pure SQL

Who is this course for

Complete beginners who want to build a strong foundation in SQL from scratch
Data science and computer science students who want a practical, hands-on approach
Data analysts and BI professionals seeking advanced techniques for complex queries
Data engineers looking to design robust ETL pipelines and data warehouses
Data scientists wanting to use SQL for exploratory data analysis
Software developers aiming to integrate SQL efficiently and tune performance

Course materials

All course materials are available on GitHub. Free to download, use, and reference at any time.

SQL Course — GitHub Repository All datasets, scripts, and exercises used in the course Download Course Materials All slides, templates, and reference sheets in one download
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$19.99
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30 hours of video content
295 lectures across 28 sections
3 real-world projects
Full GitHub repository included
Full lifetime access
Certificate of completion

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Ready to master SQL?

30 hours. 295 lectures. 3 real projects. Everything you need to go from zero to SQL hero.

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