Top 5 Free SQL Courses for Data Scientists

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Suppose you’re considering making a career change to a data career. In that case, you undoubtedly already know that the majority of data professions revolve around the effective use of data to answer business issues, regardless of the technologies you employ. You can become a data analyst by developing the necessary skill set and progressively looking into additional positions like data scientist, BI analyst, etc. So where do you even begin?

Is it wise to pick up a programming language like R or Python? Or should you start studying a BI tool like Tableau right away? Is the alternative?

is a crucial tool that is indispensable for many data-related careers, including data analysis, data science, and data engineering. It is also unquestionably the most vital talent to possess. To help you master the fundamentals of in a few hours, we’ve put together this list of beginner-friendly courses.

1. Intro to SQL Courses: Querying and Managing Data

Querying and Managing Data is a course you can take for free at Khan Academy. You’ll learn how to query and manipulate data within relational database tables.

This course consists of multiple short lessons that are followed by comprehension-testing exercises. The following is the breakdown of the course’s sections:

• – The Basics section covers basics like creating tables and inserting data, querying data and aggregating.
  
  – The More Advanced Queries section covers logical operators, the IN and LIKE operators and HAVING.
  
• – The section Relational Queries focuses on using the different types of joins to use data from multiple tables to answer questions. 

• – The Modifying Databases section teaches you how to modify table schemas with.

Link: Intro to SQL: Querying and Managing Data

2. SQL Courses and Database for Beginners

If you prefer learning from instructor-led video tutorials, then the  Tutorial – Full Database Course for Beginners is a good introduction.

You will study the foundations of database design and how to query databases using it in roughly 4.5 hours. One of the most popular relational database management systems (RDBMS) that you’ll use is My.

You will first learn about designing database schemas and using them to carry out CRUD activities. After that, you will study about functions, joins, unions, aggregations, nested queries, and triggers.

Link: Tutorial – Full Database Course for Beginners

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3. Intro to SQL Courses

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

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

• fundamentals
• Filtering
• Aggregations
• Joins SQL Courses
• Writing readable queries

Link: Intro to SQL

4. SQL Tutorial – W3Schools

SQL Courses Tutorial by W3Schools is another great beginner-friendly resource to learn the basics of commands and functions. The tutorial is organized into multiple bite-sized lessons, each focusing on a specific command or function. So you’ll learn what the commands are, and how they work, followed by examples.

Without needing to install anything locally, you can solve the examples in the online editor. The fundamentals of are covered in this course, along with a variety of logical operators, window functions, and other topics. Additionally, this includes changing restrictions, database tables, and other things.

This tutorial serves as a quick reference in addition to a learning tool. Thus, this tutorial is a resource you should bookmark if you want to quickly seek out the syntax and sample usage of a specific function.

Link: SQL Tutorial

5. SQLZoo

Zoo is another beginner-friendly platform to learn and practice. From basic SELECT statements to advanced concepts like window functions, Zoo offers bite-sized lessons with quick practice exercises in each of them. 

The topics covered include:

• SELECT statement
• Aggregate functions
• Types of JOINs
• Understanding NULLs
• Window functions

Link: SQLZoo

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Wrapping Up

I hope you found SQL Courses this compilation of free courses useful. These courses have been designed to get you up to speed with SQfundamentals in a few hours.

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