SQL is a super helpful, universally applicable language for accessing and manipulating databases. The tool is widely applied in careers such as business analytics, data science, software engineering, and journalism.
Getting the hang of SQL can help get job opportunities and career advancements, thanks to its prevalence across professional sectors, user-friendly nature, and the robustness of its functions.
From the many courses available on SQL over the internet, here is a curated list of six free ones to get you started and level up your SQL game.
Best SQL Certification Course for Free
| Course Name | Provided by | Best for |
| Learn SQL | Codecademy | Data Management |
| SQL Projects for Beginners | Great Learning | Beginners |
| SQL for Data Science | Great Learning | Get Certified |
| Intermediate SQL Server | Datacamp | Microsoft SQL Server |
| Reporting in SQL | Datacamp | Olympics database |
| Advanced Databases and SQL Querying | Udemy | Advance Learners |
Learn SQL
Through this course, Codecademy focuses on managing large datasets and analyzing real data through the standard language for data management. Taken by 1,200,176 learners across four sessions, this beginner-level program delves deep into the curriculum.
It equips participants with the skills to navigate SQL and apply them to manipulate databases effectively, providing a robust foundation for handling substantial datasets in real-world scenarios.
SQL Projects for Beginners
Presented on My Great Learning, this course aims to provide practical knowledge in managing and querying databases through DBMS tools. Focused on SQL, the first half introduces Database Management Systems. It then delves into understanding the Relational Database Management System, a critical interface managing data storage and performance.
The latter part offers a hands-on SQL project for beginners, complete with source code, fostering practical experience. Participants can wrap up the course by taking a quiz and obtaining a certificate, solidifying their understanding of DBMS tools and SQL applications.
SQL for Data Science
Starting with exploring SQL clauses, the program progresses to cover essential statements like GROUP BY, ALIAS, and various types of JOINS (INNER, LEFT, RIGHT, FULL, and SELF). Subsequent sections guide you through working with subqueries, understanding Python concepts in relation to SQL, and its overall popularity.
The course includes:
- A Python installation guide
- Assessments for skill evaluation
- The opportunity to obtain a certificate upon completion
Refer to the attached materials for additional reference to explore the world of SQL and Python for data science at no cost.
Intermediate SQL Server
The course by DataCamp is all about using T-SQL, a kind of SQL for Microsoft SQL Server, to analyze and clean up data right in the databases where it's stored. You'll learn practical stuff like dealing with missing data, working with dates, and using advanced queries to calculate summary stats.
Once you finish the course, you'll have the skills to analyze data quickly and easily, drawing insights from it. It's like getting the key to unlock useful info from databases using T-SQL – perfect for anyone dealing with data in Microsoft SQL Server!
Reporting in SQL
Learn to create impactful SQL reports and dashboards while refining data cleaning and validation skills in this course. Apply previously learned SQL concepts and functions to construct a personalized dashboard using an Olympics database.
You can also explore data, manipulate, clean, validate, and perform complex calculations to enhance your practical SQL skills. Build your dashboard and gain hands-on experience with real-world data scenarios.
Advanced Databases and SQL Querying
This Udemy course is for those who already know the basics of databases and can handle simple TSQL queries. If you've taken the instructor's previous course, even better! In about 2+ hours, you'll dive into advanced stuff like Views, Triggers, and Dynamic Queries. Each concept comes with assignments to help you practice.
It’s great if you're eyeing a database job or want to boost your database skills and use them in your projects. It's the next step to leveling up your TSQL game.
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