Data Science from Scratch

SQL is the language of data — and mastering it unlocks powerful insights.

Whether you’re building dashboards, cleaning raw datasets, or preparing for a data analyst role, your SQL skills can make or break the outcome.

That’s why I created something special:

“100 Must-Know SQL Commands with Examples”

A practical, easy-to-follow reference for anyone working with data.

From foundational queries like SELECT, JOIN, and WHERE to advanced logic using RANK(), LEAD(), COALESCE, and more — this guide covers it all in a clear, structured format.

Perfect for:

• Data Analysts and BI Developers

• SQL learners and upskillers

• Interview preparation

• Day-to-day query writing and troubleshooting

Each command includes:

Syntax

Simple explanation

Real-world example

Designed to help you write better queries faster — without constantly switching between tutorials and forums.

If SQL is part of your journey, this guide will support you every step of the way.

Feel free to save it, share it with your team, and revisit it whenever you need a refresher.

💬 Let me know which SQL command you use most often — or which one surprised you the most!

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