If you work with data, we recommend taking SQL courses that teach you how to manage it. SQL is one of the best-known programming languages in the area and is used to calculate large volumes of information. It can automate tasks and save time on data downloads.
Therefore, many online courses could assist you in studying Structural Query Language and even making a living. This writing has compiled a list to help you choose the best one. They all include a certificate. They adapt to your schedule, and, best of all, they are free.
Discover the top SQL courses
One of the advantages of online SQL courses is their flexibility. This means that anyone, regardless of their activities, can take them. Next, we will explain what they are, how they are structured, and who teaches them.
Overview of queries with Transact-SQL
Microsoft has enabled a free program platform, Microsoft Learn, where you can study programming. One is Introduction to Queries with Transact-SQL, which explains database uses. The program has six modules, which are:
- Introduction to Transact-SQL
- Sort and filter results in T-SQL
- Combining different tables with JOIN in T-SQL
- Write queries in T-SQL
- Using built-in functions
- Data modification
The program itself requires understanding the data table in Excel. Likewise, you can receive lessons from experts on the subject and include them in your learning path.
SQL and Relational Databases 101
The Cognitive Class AI platform can help you study SQL with its free program. Its estimated extent is three hours and embraces the basic concepts. The program is made up of the following modules:
- SQL and Relational Database 101
- Restrictions on relational models and data objects
- Data Definition Language (DDL) and Data Manipulation Language (DML)
- Advanced Structural Query Language
- Work with multiple tables
Each module contains texts, video conferences, practical work, and a final exam. Although short, it is pretty complete and rated almost five stars. For this reason, we endorse taking it if you are starting.
SQL for Data Analysis
If you are unfamiliar with data analysis, this free SQL course is ideal. The program is available on the Udacity platform, and its tutor is Derek Steer, the CEO of Mode Analytics. Currently, it has nine lessons that are:
- Basic SQL
- Joins in SQL
- Aggregations
- Subqueries and temporary tables
- Data cleaning
- SQL functions on Windows
- Advanced SQL
Like almost all Udacity content, the SQL course is free. It is updated, so it is ideal if you are looking for a quick job. You can see it in the last lesson, where they also gave tips on mastering job interviews.
Microsoft Azure SQL
Coursera has a wide diversity of courses associated with programming. This Microsoft Azure SQL course is part of a learning path, although you can audit it for free to access the content. Its modules are:
- Relational data services in Microsoft Azure
- Provisioning, deployment, and querying of relational data in Microsoft Azure.
Although the certificate costs money, you can request financial help to obtain it for free if you meet the requirements. Its current rating is 4.5, and students appreciate that the explanations are well-detailed and easy to follow.
An introduction to the world of SQL
If you’re looking for a wide-ranging program, try this introductory SQL course-. It is a Coursera program taught by the University of Michigan. Your mentor is Dr. Chuck, a tutor at that college who has participated in various technological projects.
The program is part of the specialized program “Web Applications for Everyone” and includes the following modules:
- PHP and SQL installation
- Introduction to SQL
- Database design
- From many to many
Like other Coursera programs, you can audit it for free or apply for a scholarship to avoid paying for the certificate. The schedule is quite good, almost five stars, so the investment will be worth it.
SQL for data science
Acquire the fundamentals of SQL in this class taught by the College of California, Davis. The teacher is Women Data CEO Sadie ST. Lawrence has already trained more than 70,000 individuals in this area. Within its program, the resulting modules are included:
- First steps in data selection and recovery with SQL
- Filter, sort, and capture data with SQL
- Subquery and joins in SQL
- Modification and analysis of data with SQL
If you subscribe, you will automatically enter the specialized program on Coursera, which you can try free for seven days. You can also request financial aid to obtain the certificate for free. Many students appreciate that the program can be carried out in internships and is flexible.
Introduction to SQL
이 SQL course mainly emphasizes people interested in managing Google BigQuery as a database. To subscribe, you must make an account on Kaggle and dedicate a few hours to finish it. The estimated duration is 3 hours and is made up of the subsequent teachings:
- First steps with SQL and Query
- Select From 및 Where
- Group, have, and tell
- Sort results
- How and with
- Data union
Each lesson has theoretical content and practical training to corroborate your learning. You can also interact with the instructors in the “Discussions” tab, which makes it quite enjoyable and dynamic. If you finish, you can obtain a certificate and continue with another more advanced class.
IBM: SQL for data science
A brilliant way to acquire knowledge about SQL is by practice. The program IBM imparted has practical syllabuses for mastering data management instantly. Your instructor is Rav Ahuja, the director of the Global Program. Among the themes studied are:
- The fundamentals of SQL
- Chain and interval patterns
- Basic data queries
- Order and grouping of data together
- Writing instructions
- Data analysis in Python and Jupyter Notebooks
The package is free for a limited time. If you subscribe today, consider the deadlines to complete the session. To increase your knowledge, follow the Data Engineering program on edX.
Davidson: Introduction to SQL
You can enter this course, even if you are a novice, on the edX platform. Your instructor is Pete Benbow, Data Operations Manager at Davidson College. The program has various lessons, among which are:
- History of SQL
- PostgreSQL installation
- Data inspection and conversion
- Analytical functions
- Recursive operations with CTE
- Temporal variables
You can complete it in a month by working about 3 or 5 hours a week. It is available for free audit, but you must pay the corresponding amount if you want a certificate. As for its rating, it reaches almost five points so it would be worth the investment.
Databases: Relational databases and SQL
It was created in 2011 by Stanford Online and is currently available on the edX platform for free auditing. The instructor is Jennifer Widom, dean of the School of Engineering at Stanford University.
The duration of the program is approximately two weeks and consists of the following modules:
- Relational database and SQL
- Advanced topics in SQL
- OLAP and Recursion
- Modeling and Theory
- Semi-structured data
To enroll in the course, you need to have a fundamental understanding of computer science, although it is not a requirement. Its rating is 4 points, so it is well appreciated by students looking to learn online. You can subscribe for free or pay for the certificate.
With any of these free SQL courses, you can lead the most used programming language in information management. In addition, if you combine it with Cybersecurity classes, you will have solid knowledge about data protection to prevent cyber-attacks.
