Most people learn SQL by memorising syntax. This course teaches you how to think in SQL and that is the difference between copying queries and writing them.
SQL is the most in-demand data skill across every industry, and this course teaches it the way it actually works. You will start with how relational databases are structured and why data lives across multiple tables, then build up to writing queries that feel natural rather than mechanical. Every ...
by
Jubair Ahmed
About 6 hours to complete
24 lessons
• 24 lessons• 8 units• Certificate of completion
UNIT
1Understand what a database is, what SQL does, and how data is organised into tables with rules that keep it clean.
UNIT
2Write real SQL from day one — fetch data, filter rows, sort results, and control exactly what you get back.
UNIT
3Count, sum, average, and group your data to produce the summaries that power every dashboard and report.
UNIT
4Combine data from multiple tables using the most important concept in relational databases.
UNIT
5Add new records, change existing ones, and remove data safely — the three operations that keep a database alive.
UNIT
6Write queries inside queries, create reusable named results, and solve complex problems step by step.
UNIT
7Rank, number, and compare rows without collapsing your data — the secret weapon of every SQL analyst.
UNIT
8Solve the classic problems that come up in every job and interview, and learn to write queries that are fast as well as correct.
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I'm a web development enthusiast who loves building with React and NextJS, always looking for ways to optimize performance and create seamless experiences.
I'm also deeply interested in SystemDesign, constantly exploring how things scale and work behind the scenes. Technology excites me, and I enjoy learning and applying new tools and frameworks to solve real-world problems.
Beyond coding, I have a creative mindset, always working on side projects that bring ideas to life.
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I'm a web development enthusiast who loves building with React and NextJS, always looking for ways to optimize performance and create seamless experiences.
I'm also deeply interested in SystemDesign, constantly exploring how things scale and work behind the scenes. Technology excites me, and I enjoy learning and applying new tools and frameworks to solve real-world problems.
Beyond coding, I have a creative mindset, always working on side projects that bring ideas to life.
