Data analytics is an increasingly important part of every element of business. As more and more data is collected, learning SQL enables us to work efficiently with databases and big data.Start Free Tutorial
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Introduction to SQL
Get hands-on practice using Structured Query Language (SQL) to access and manipulate data within databases.Start Free Tutorial
What You'll Learn
What is SQL?
Learn what SQL is and how it’s used to work with data.
Explore the foundational SELECT statement and practice using it.
Discover how to filter data to view more specific information.
Learn to compute aggregated information on your data.
Explore Detailed SQL Reference Docs
Discover the features and capabilities of SQL, the essential language for interacting with databases and data. This reference documentation is an invaluable tool to support you while you learn and build.
Table of Contents
Leading Digital Businesses Need SQL Skills
Why Learn SQL?
You should learn SQL because SQL knowledge will make a major impact on your ability to perform a variety of tasks relating to data. And while learning SQL is crucial if you want to become a data professional, it's also increasingly prioritized in a number of other fields and industries, including web development, digital marketing, finance, accounting, and more.
Studies have shown that SQL is the most in-demand skill for data jobs because of how efficiently it can manipulate and extract large volumes of data from database systems. So if you want to become a Data Scientist, Data Analyst, or Data Engineer, learning SQL can be considered a prerequisite. And SQL isn't useful only for dealing with company data in relational databases, but also for ecommerce apps, cloud storage, and social-media accounts.
The reason SQL skills are so valuable for people who are not data professionals is that data is being used to drive decision-making across any number of departments in most companies. Data is being used to create and evaluate marketing campaigns, assess organizational productivity and staffing needs, and more. Learning SQL will empower you to combine data from multiple data sources and tackle huge datasets to ultimately create actionable business insights, regardless of your job role.
What is SQL?
SQL is a standard language that is used to manipulate, access, update, search, and communicate with relational databases. SQL is considered the most important programming language for Data Scientists, Data Analysts, and other data professionals, who use SQL to extract and organize data stored in relational databases.
According to the American National Standards Institute (ANSI), SQL is the standard language for relational database management systems, including Microsoft SQL Server, Access, Oracle, Sybase, and more. Even if you are performing a data analysis using another language like R or Python, SQL is still necessary to access data from the database.
Though SQL is used by most database systems, many do add proprietary extensions that are unique to their systems. As a result, SQL code typically does require some changes before it can be ported to different database systems.
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