SQL Practice: 100 Real-World Exercises & Solutions

• Write SQL queries from basic to advanced level
• Select, filter, and sort data
• Join data from multiple tables using JOIN
• Group data and use aggregate functions
• Solve real-world problems using SQL
• Create subqueries and nested SELECT statements
• Analyze data independently in relational databases

SQL Practice: 100 Real-World Exercises & Solutions

Knowing SQL syntax is one thing. Being able to solve real problems with SQL is another.

If you already understand the basics of SQL and want to become more confident writing queries on your own, this course is built for you.

Instead of spending hours watching theory, you will improve your SQL skills by solving 100 practical SQL exercisesbased on realistic database scenarios.

Each exercise gives you a problem to solve independently before showing you the complete solution and explaining how the query works.

The exercises gradually increase in difficulty, helping you move from basic queries to more advanced SQL challenges.

What You Will Practice

Throughout the course, you will work with essential SQL concepts including:

• SELECT statements

• WHERE conditions

• ORDER BY and LIMIT

• Comparison and logical operators

• Column aliases

• Aggregate functions

• GROUP BY

• HAVING

• INNER JOIN and other JOIN operations

• Queries using multiple tables

• Subqueries

• Nested SELECT statements

• Data filtering and sorting

• Multi-step SQL problems

• Real-world data analysis scenarios

  
  

100 Exercises Across Three Difficulty Levels

Beginner – 40 Exercises

Build confidence with fundamental SQL queries.

You will practice:

• Selecting data from tables

• Filtering records with WHERE

• Sorting results with ORDER BY

• Limiting query results

• Using aliases

• Working with comparison and logical operators

  
  

Intermediate – 35 Exercises

Move beyond simple queries and start working with more realistic database problems.

You will practice:

• Combining data from multiple tables

• Using JOIN operations

• GROUP BY and aggregate functions

• HAVING conditions

• More advanced filtering

• Combining multiple SQL concepts in one query

  
  

Advanced – 25 Exercises

Challenge yourself with more complex SQL problems.

You will practice:

• Subqueries

• Nested SELECT statements

• Complex filtering

• Multi-step queries

• Realistic data analysis tasks

• Solving problems that require combining several SQL techniques

  
  

How the Course Works

The learning process is simple:

1. Read the SQL challenge

First, you receive a practical problem to solve.

2. Write your own query

Try to find the solution independently before checking the answer.

3. Review the solution

See the complete SQL query and compare it with your approach.

4. Understand how it works

Follow the explanation to understand why the query produces the expected result.

This approach helps you develop the problem-solving skills required when working with SQL in real projects.

Who Is This Course For?

This course is designed for:

• Students who already know basic SQL

• Aspiring Data Analysts

• QA Engineers and Software Testers

• Business Intelligence professionals

• Developers working with databases

• People preparing for SQL technical interviews

• Anyone who wants more hands-on SQL practice

Why Practice SQL?

Watching tutorials can help you understand SQL, but becoming comfortable with SQL requires actually writing queries.

By solving many different problems, you learn how to:

• Translate requirements into SQL queries

• Choose the right SQL statements

• Combine multiple SQL concepts

• Analyze data more efficiently

• Recognize common query patterns

• Solve unfamiliar database problems independently

  
  

By the end of the course, you will have completed 100 SQL exercises and gained significantly more experience writing practical SQL queries.

If you want to stop only watching SQL tutorials and start actually solving SQL problems, this course is for you.