Comprehensive SQL Course For Data Professionals (Udemy.com)
Become a Confident SQL Developer by Developing a Real World Project using SQL and Solving 120+ SQL Coding Exercises
Created by: Ramesh Retnasamy
Last updated August 2025
What you will learn
- You will learn how to create database tables, alter an existing table and drop a table that's not required using SQL
- You will learn how to query data from a table, apply transformations using functions, filter and sort the data returned using SQL
- You will learn how to join multiple tables, summarise the data as required to produce summaries using SQL
- You will learn how to use sub queries and common table expressions to implement complex logic using SQL
- You will learn how to create and work with views to simplify complex solutions using SQL
- Using SQL, you will learn how to use window functions to carry out complex data analysis with ease
- Using SQL, you will learn how to design and implement a database for a real world project
- You will learn how to write SQL queries required to satisfy the requirements for a real world project
How it compares
Against the other 371 rated Udemy courses in Data Analysis on CourseDuck:
- Rating4.6 out of 5higher than 73% of them
- Reviews1,105#135 of 372 by number of reviews
- Length13.7 hourslonger than 84% of them
- Last updatedAugust 2025earlier than 51% of them
Course Description
Welcome!
I am looking forward to helping you to become proficient in SQL, one of the fundamental skills required to become a data professional. SQL is one of the important skill required to become data engineer, data analyst, data scientist, web developer, application developer etc. So, if you aspire to be a competent data professional, this is course is for you!
Course Approach:
This is a comprehensive hands-on course with 120+ SQL coding exercises and a Real World Project of building a database for one of the popular sporting tournaments, and writing all the SQL statements required for the tournament website.
I have combined my experience working with SQL in the industry for 25 years with teaching on Udemy for 160,000 students to create this comprehensive curriculum. Throughout the course, I provide guidance on using best practices for writing SQL statements and also take you through real world examples.
I value your time as much as I do mine. So, I have designed this SQL course to be fast-paced and to the point. Also, the course has been taught with simple English and no jargons. I start the course from basics and progress to complex topics, and by the end of the course you will be proficient in SQL.
Comprehensive Curriculum:
Beginner Level Topic:
Introduction to Databases and SQL
Basics of SQL statements
Querying Data
Filtering Data
Intermediate Level Topic:
Simple SQL functions
Date Functions
Conditional Expressions & Functions
Aggregate Functions
Grouping Data
SQL Joins
SQL Constraints
Primary & Foreign Keys and Relationships
Advanced Level Topic:
Database Design & Entity Relationship Diagrams
Subqueries
Common Table Expressions (CTEs)
Views
Window/ Analytical Functions
Project:
Requirements gathering & Database Design
Writing SQL Queries for a Website
ANSI SQL:
This course follows the ANSI standard for SQL. So, once you complete the course, you will be able to with with SQL on all major databases such as MySQL, PostgreSQL, SQLite, Oracle, SQL Server etc, and also with any big data and parallel processing engines such as Spark SQL, Hive SQL, Snowflake, Google BigQuery, Azure Synapse etc.
Course Outcome:
Once you have completed the course including all the SQL coding exercises and the project, I genuinely believe that you will be in a position to start working in a real world data project using SQL.
Student Feedback:
Here are some of the reviews from existing students which may help you make the decision, but also please feel free to go through the reviews from others at the bottom of this page!
Ayantika N [5*] - This is my first-hand experience with SQL. I thoroughly enjoyed the course, especially being a student with no background in computer language. I found the course well-thought out and beneficial for me. The hands-on examples are really well explained. I look forward to coming back to your courses in future as well. Kudos to you!! :)
Mayank S [5*] - A very comprehensive course which starts with the basics then slowly moves on to intermediate and advanced concepts. The best part is the practice exercises to solidify one's understanding. Easy to follow along.
Ritesh T [5*] - I have purchased all his courses. The best part of him is that, he explains the concepts + the use cases where it would be used. Just like his databricks, azure df, azure synapse courses, the theories are there as well as the scenarios where such concepts could / would / should be used. There are times when a student like me who is working on live projects could use a particular concept, and bingo, his lectures come life saving.
Instructor Details
- 4.6 Rating
1,105 Reviews
Ramesh Retnasamy
Hello! I am a full-time Senior Data Engineer and Architect with over 25 years of experience delivering large scale data projects across industries including technology, gaming, finance, retail, and government.
I have worked extensively on cloud platforms such as Azure and AWS, as well as on-premises systems. I hold multiple certifications, including Data Engineering credentials from Microsoft Azure and Databricks.
Teaching is a passion of mine, and I take great pride in the success of my students. My approach is different from traditional IT training. I focus on real world projects that not only explain the concepts but also help them stick through hands-on application. I provide guidance on best practices and help you build solutions that are ready for real production environments.
I value your time as much as mine, so I keep my courses focused, practical, and free of jargon. All lessons are taught in simple English. By the end of my courses, you will have the skills and confidence to begin working on real projects, along with a strong foundation to continue learning and growing in your career.
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Reviews
By Aman Abrol on 9/21/2026
It was just an introduction only, I am waiting for deep dive into it.
By Rajesh JYOTHI on 8/31/2026
A very well-structured and practical SQL course. The concepts are explained clearly with plenty of hands-on coding exercises and real-world examples. I especially liked the practical approach, which makes it easy to apply the learning to data-related work. Highly recommended for anyone looking to strengthen their SQL skills, especially aspiring Data Analysts and Data Engineers. Great course and excellent value!
By Vaibhav Tiwari on 5/18/2026
It is the best SQL course I have taken till date, learning SQL was in my todo list since very long time, and this is exactly how I wanted to learn it, Thank you Ramesh Sir for making this course and providing understanding of all the concepts in such an amazing and easy to understand format.
By Hamna Ollakkal on 3/3/2026
Great Course. The content is well-structured and easy to follow, making even complex concepts feel simple and approachable. The instructor explained topics clearly with practical examples. It’s highly valuable for those looking to strengthen their SQL skills.
By Ramesh Samineni on 5/25/2025
This course is truly exceptional, covering all the essential SQL skills needed for a data engineer or analyst. It's neatly structured, concise, and to the point. What I particularly admire is the way complex topics are taught in a simple and intuitive manner, making them easy to grasp. A huge thanks for including SQL Lite lab practice after every topic—it really enhances learning! Great work, and I hope to see more content from you in the data engineering space. Looking forward to diving into your next course on Azure Data Factory (ADF)!
By Sunny on 1/23/2025
I had a great and enjoyable learning experience! The content was engaging, informative, and presented in a way that made even complex topics easy to understand. I thoroughly enjoyed the process and found it both fun and enriching. However, I did face some challenges with video lagging during playback, which slightly disrupted the flow. Fixing this issue would make the experience seamless and even more enjoyable. Overall, it was a valuable experience.
By Sai Kiran Goud on 12/19/2024
This course was incredibly helpful in enhancing my understanding of the subject. I sincerely thank the instructor for the insightful sessions and for delivering such high-quality content. Your efforts are truly appreciated, and the knowledge I’ve gained will be invaluable. Thank you!
By Anonymized User on 8/29/2024
An amazing course for beginners. The concepts are explained in an easy to understand manner and the exercises also help to get a hold of these concepts. My suggestion would be to include another problem statement like the IPL problem but with no solution so the students can come up with their own entity diagrams and create tables and queries. Another suggestion would be to include more coding exercises that involve joins other than inner join. I noticed that the joins used in almost all the exercises were inner joins.
By Ayantika Nag on 8/25/2024
Hi Ramesh, This is my first-hand experience with SQL. I thoroughly enjoyed the course, especially being a student with no background in computer language. I found the course well-thought out and beneficial for me. The hands-on examples are really well explained. I look forward to coming back to your courses in future as well. Kudos to you!! :)
By Kandukuri Akhila on 7/24/2024
adding an explanation video for each challenge provided would give more clear understanding towards the practice if not get solved by on our own rather than just providing the answers. I felt most to get include the window functions and the SQL project. Thank you.
Quality Score
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Overall Score : 92 / 100











