Guys, Big Announcement!

I’m launching a Complete SQL Learning Series — designed for everyone — whether you're a beginner, intermediate, or someone preparing for data interviews.

This is a complete step-by-step journey — from scratch to advanced — filled with practical examples, relatable scenarios, and short quizzes after each topic to solidify your learning.

Here’s the 5-Week Plan:

Week 1: SQL Fundamentals (No Prior Knowledge Needed)

- What is SQL? Real-world Use Cases

- Databases vs Tables

- SELECT Queries — The Heart of SQL

- Filtering Data with WHERE

- Sorting with ORDER BY

- Using DISTINCT and LIMIT

- Basic Arithmetic and Column Aliases

Week 2: Aggregations & Grouping

- COUNT, SUM, AVG, MIN, MAX — When and How

- GROUP BY — The Right Way

- HAVING vs WHERE

- Dealing with NULLs in Aggregations

- CASE Statements for Conditional Logic

*Week 3: Mastering JOINS & Relationships*

- Understanding Table Relationships (1-to-1, 1-to-Many)

- INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN

- Practical Examples with Two or More Tables

- SELF JOIN & CROSS JOIN — What, When & Why

- Common Join Mistakes & Fixes

Week 4: Advanced SQL Concepts

- Subqueries: Writing Queries Inside Queries

- CTEs (WITH Clause): Cleaner & More Readable SQL

- Window Functions: RANK, DENSE_RANK, ROW_NUMBER

- Using PARTITION BY and ORDER BY

- EXISTS vs IN: Performance and Use Cases


Week 5: Real-World Scenarios & Interview-Ready SQL

- Using SQL to Solve Real Business Problems

- SQL for Sales, Marketing, HR & Product Analytics

- Writing Clean, Efficient & Complex Queries

- Most Common SQL Interview Questions like:

“Find the second highest salary”

“Detect duplicates in a table”

“Calculate running totals”

“Identify top N products per category”

- Practice Challenges Based on Real Interviews

React with ❤️ if you're ready for this series

Join our WhatsApp channel to access it: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v/1075