Thursday, July 29, 2021

6 Best Free SQL Courses for Beginners to Learn in 2021 - Best of Lot

Hello guys, we are already in the second week of New year, and everyone is talking about their goals to improve them as a better person, a better programmer, or better health. If you have also made your goal, and one of them is to improve your SQL skill, you have come to the right place because I will share some of the free online courses to learn and master SQL this year. The list includes a free course from Udemy, a popular online portal to learn Oracle, PostgreSQL, and Microsoft SQL Server. Yes, I have tried hard to include free courses on different databases to choose the course you want. 

As you already know, SQL is one of the essential and timeless skills and much more important than any fancy library or framework you are thinking to learn. If you ask me which two skills every programmer should have, I would say SQL and UNIX; these two have survived for a long time and will survive for many coming decades. 

SQL is also exciting; once you get the hang of it, you would love to write queries and analyze your queries' performance.

Even though SQL is so important and many programmers realize this, I have found that many more programmers just don't spend much time improving their SQL skills. They think that knowing just SELECT, UPDATE, and DELETE statements is enough, which is not correct.

Even though SQL is not as vast as C++ or Java, there are still many things to learn like indexing, choosing the right index, writing a correct query that performs better, and there are always many database-specific nuisances.

Things that may work in one data like Oracle it's not guaranteed to work on another database, especially if you are using a database-specific feature and not limited to SQL ANSI standard.

Anyway, you don't need to worry; if you have made a goal to learn SQL or improve your SQL skill, you will definitely spend some time learning more about SQL and the database you are currently working on.

You can take help from these courses, books, and several tutorials I have shared in this blog to fill the gaps in your understanding. Btw, I also recommend everyone to join a comprehensive SQL beginner course for structured learning.





Top 6 Free Online Courses to Learn Database and SQL in 2021

These courses have been made free by their instructor for promotional and education reasons, but you better check the price before joining the course. Sometimes, Instructors convert their free course to the paid course once they reach their promotional target, and you may need to pay to access the material available for free earlier.

That's why I join the course when they are free and use it when I get some time to spend. Once you join, the course will be free for you. Without any further ado, here is my list of some of the best yet free courses to learn SQL and Database in 2021:

1. Introduction to Databases and SQL Querying 

This is an introductory course on Databases and SQL Querying. There are no pre-requisites for this course. If you are looking to get acquainted with the concept of Databases and Queries for maybe your next interview as an analyst, this is the right course for you.

All you need is a windows machine, and we will walk through it step by step, right from setting up your environment to creating your first table to writing your first SQL query.

This course is structured in a way that you can follow along with me. At the end of this course, you should be comfortable writing simple queries, including queries related to Dates, String manipulation, Aggregation, etc.

This is an ideal course for SQL beginners with absolutely no experience in the database. You will not only learn basic SQL Syntax but also learn essential concepts of databases. No Prior Programming experience is required. This course is probably not for you if you're looking to learn more advanced and complex queries.

Introduction to Databases and SQL Querying - free course




2. SQL Crash Course: PostgreSQL for Beginners 

This is another free online course to learn SQL basics, but with PostgreSQL, another leading relational database. This free udemy SQL course is also aimed at Beginners to Intermediate levels. It covers all the bases for you to get up to speed with writing SQL before you progress on to more advanced SQL for transforming and analyzing data.

It will explain everything step by step and in detail to get to know SQL very well. The course uses PostgreSQL, which you can download for free from the PostgreSQL website.

Here are key things you will learn in this free SQL course:
  1. Basic SQL commands
  2. Become proficient in SQL queries like SELECT, CREATE, and ALTER
  3. Solid understanding of SQL
After completing this course, you should understand write join queries involving multiple tables, write aggregation-based queries using group by and having a clause, and learn how to do backups and restores. You will also learn more advanced SQL query techniques for data analysis and discovery.

free online course to learn PostgreSQL for beginners




3. Advanced Databases and SQL Querying

This course is an advanced T-SQL Querying course. The course expects students to know basic database concepts and are comfortable writing basic T-SQL queries like SELECT, JOINs, etc.

Students are expected to have taken my previous course (Introduction to Databases and Querying). This course covers advanced concepts like Views, Triggers, Dynamic Queries, etc. The T-SQL Scripts for all demos are uploaded. The course is about 2+hours and has assignments at the end of each concept.

If you looking for your next database job or trying to improve your existing database knowledge and apply it to your projects, this is the course for you.

free course to learn Advanced Database and SQL skills




4. Microsoft SQL Server - An Introduction 

This is another awesome free database course to learn about Microsoft SQL Server from Udemy. This free course is 2.5 hours long and will teach you MSSQL or T-SQL from group up. 

Here are the key things you will learn in this free Udemy SQL course
  1. How to download and install SQL Server Express on your computer - for free
  2. How to log in and create a database.
  3. How to create a table and insert data
  4. How to retrieve the data contained in your table.
  5. Learn about the SELECT, FROM, WHERE, GROUP BY, HAVING, and ORDER BY clauses.
In short, a nice course to learn SQL with Microsoft SQL Server. If you happen to use this database, this is just the perfect course, and it's free.

free course to learn SQL Server Management Studio





5. Oracle SQL - A Complete Introduction 

In this course, you will learn how to write basic SQL statements to view data, insert data, update existing data, and delete data in a database.

It's perfect for beginners or first-timers who have no idea about databases or SQL and want to learn these skills using Oracle database.

free course to learn Oracle SQL for beginners




6. Database Design and Management

This is another great free course from Udemy to learn Database design and modeling. In this free online course, you will learn relational database design with practical concepts and examples. This series works with any database system!

Here are the key skills you will learn in this free database design course:
  1. How to design a database with ERD
  2. How to maintain database productively and effectively
  3. How to use Visual Paradigm in database design
  4. How to use Visual Paradigm in database management
This is an ideal course for developers who write SQL code and have at least a year of SQL experience and if you are thinking of becoming a DBA.


Top 6 Free Database and SQL Courses for Beginners - Best of Lot



That's all about some of the best SQL courses to learn online for free. People often have free means of low quality, but these courses are excellent, high-quality courses. We are lucky that their authors have made them available for free, and big thanks to them for sharing their hard work for free for other people's benefit.  I hope you can achieve your goal of improving your SQL skill this year, and I am sure you will thank yourself for learning SQL.

Other Useful Programming Resources you may like to explore

Thanks for reading this article so far. If you find these Database and SQL courses useful, please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note. 

P. S. - If you don't mind paying a small amount for learning something as valuable as Database and SQL concepts, then I also suggest you take a look at these best SQL and Database courses on HackerNon, which are not free but definitely worth your time and money.

3 comments :

Brocho said...

Nice list, thanks!

Brocho said...

Microsoft SQL Server - An Introduction has removed from Udemy.

javin paul said...

Thanks @Brocho, I'll check and replace if its not available anymore. thanks for informing us.

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