50 Days SQL Challenge : From Zero To SQL Developer

What you’ll learn

• Writing efficient SQL queries
• Using SELECT, WHERE, GROUP BY, HAVING, ORDER BY, LIMIT
• Handling NULLs, CASE WHEN, and data filtering
• Performing INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN operations
• Subqueries and nested SELECT statements

Requirements

• Basic understanding of SQL is helpful

Description

50 Days SQL Challenge : From Zero To SQL Developer

Welcome to the SQL Coding Challenge Bootcamp: 50 Challenges Solved – your one-stop solution to mastering SQL through real-world coding problems!

Whether you’re a beginner, a data science enthusiast, or preparing for technical interviews, this course will guide you through the 50 most essential SQL challenges, commonly asked in HackerRank, LeetCode, and top tech company interviews.

Master SQL by Solving 50 Real-World Challenges – Build Query Skills for Data Science, Interviews, and HackerRank Success

In this hands-on bootcamp, each SQL challenge is solved step-by-step with clear explanations, optimized solutions, and real datasets. You’ll go from writing basic queries to solving complex problems involving joins, aggregations, subqueries, window functions, and more.

Why This Course Stands Out:

• Real-world problems from HackerRank/LeetCode

• Fully solved challenges with walkthroughs

• Builds confidence for coding rounds & interviews

• Best practice for SQL in Data Science & Analytics

• Suitable for job preparation and career switchers

We’ve made sure to start from the fundamentals and gradually move into intermediate and advanced problems, making this bootcamp perfect for both beginners and upskillers.

By the End of This Course:

• You will have solved 50 practical challenges.

• You will understand how to approach real-world data queries.

• You’ll gain confidence to take on SQL interviews.

• You’ll be equipped with a portfolio-ready SQL skillset.

Author(s): ARUNNACHALAM SHANMUGARAAJAN