Looking to make a career in data science? Start by learning SQL with these free courses.5 Free SQL Online Courses for Data Science Beginners –

Effectively using data to address business queries is fundamental, regardless of the specific tools, if you’re looking to transition to a data-focused career. Getting the right skills can lead you to roles such as data analyst, data scientist, or BI analyst. So, where should you begin?

One of the most essential skill is SQL. It’s considered the backbone of various data professions, which includes data analysis, data science, and data engineering. To help you get started, codemagnet has come up with a list of beginner-friendly SQL courses that can teach you the basics in just a few hours.

1. Intro to SQL: Querying and managing data:

This is absolutely free course provided by khan academy which wisely covers.

• The SQL Basics section covers basics like creating tables and inserting data, querying data and aggregating.
• The More Advanced SQL Queries section covers logical operators, the IN and LIKE operators and HAVING.
• The section Relational Queries in SQL focuses on using the different types of joins to use data from multiple tables to answer questions. 
• The Modifying Databases with SQL section teaches you how to modify table schemas with SQL.

Link For the Free Course

2. SQL and Database for Beginners:

Its a free online tutorial of 4.5 hours provided by freeCodeCamp.org, explaining SQL and database in detail.

In this 4.5 hours, you’ll learn both the fundamentals of database design as well as querying databases with SQL. You’ll use MySQL, one of the most widely used relational database management systems (RDBMS).

Also you will be able to explore database schema design and performing CRUD operations with SQL. Along with detail knowledge about how aggregations, nested queries, joins, unions, functions, and triggers works.

Link for the free course.

3. SQL Tutorial – W3Schools:

W3Schools SQL tutorial is a beginner-friendly resource for learning SQL commands and functions. Dividing into short lessons and focusing on a specific command or function you can easily learn what these commands do, how they work, and see examples.

On the top of that – You can practice examples in the online editor without needing to install anything. It covers SQL basics, logical operators, window functions, and more. It also includes topics like modifying database tables and constraints.

Besides being a learning resource, it’s also a handy reference. If you need to quickly check the syntax or example usage of a function.

Link For the Course

4. SQLZoo

SQLZoo is a great place for beginners to learn and practice SQL. It offers short lessons on basic and advanced topics, such as SELECT statements, aggregate functions, JOINs, NULLs, and window functions. After each lesson, you can test your understanding with quick practice exercises and more challenging assessment questions.

Link For the free course

5. Intro to SQL

The Intro to SQL course on Kaggle is also a good option if you prefer text-based tutorials followed by exercises.

In this introductory SQL course, you’ll learn how to query datasets with SQL using the BigQuery Python client. The topics covered include:

SQL fundamentals
Filtering
Aggregations
Joins
Writing readable SQL queries

Link to the free course

Conclusion:

Hope this compilation of top 5 course is helpful to you. This compilation has been designed to help you learn SQL in few hours and practice as much as you can, without spending a single amount from you pocket. Stay tuned to get in more such compilations which will help you out to learn coding !

Remember, watch and learn is the best way to learn coding !