About course

Databases are part of our everyday life, and being able to communicate with them is essential. This course will teach you the basics of SQL, a powerful query language that lets you work with many types of data.

The SQL Basics course starts with simple queries performed on a single table. These exercises will show you how to retrieve exactly what you need. Next, you’ll start working with multiple tables. You will find out about the subtle differences between various joining methods, including INNER JOIN, LEFT JOIN, RIGHT JOIN, and OUTER JOIN.

As you go deeper into the course, you’ll master using the GROUP BY function to create simple reports. You’ll also start investigating subqueries. Finally, you can test your knowledge (and earn your certificate!) in a comprehensive quiz.

Looking to get started in SQL? Give this course a try – the fascinating world of SQL queries is only a click away!

What Do You Need to Take This Course?

Just a web browser and an Internet connection

This Course Will Teach You How To:

  • Retrieve information from a database
  • Build basic reports from scratch
  • Write complex WHERE conditions, using logical operators like AND, OR, and NOT
  • Understand the LIKE, ILIKE, IN, and BETWEEN operators
  • Work with multiple tables
  • Use INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
  • Create simple reports using GROUP BY and aggregate functions
  • Write subqueries and complex instructions
  • Understand SQL set operations: UNION, INTERSECT, and EXCEPT
 

Plus, you’ll get to practice your skills on over 129 interactive exercises.

Who Should Take This Course?

  • Anyone who wants to learn SQL
  • Analysts who use relational databases
  • Students taking courses in relational databases
  • Beginning programmers
  • Business database users who want to improve their skills
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    Table of contents

    Progress: 0% completed 0 of 129 exercises done

    1. A little bit on databases

    Find out what relational databases are and get to know SQL – a language to talk to databases.

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    2. Selecting from one table

    Discover how to select data from a single table.

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    3. Querying more than one table

    Learn how to select data from multiple tables.

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    4. Aggregation and grouping

    Computations in SQL? Why not? You will learn how to group rows and compute statistics with aggregate functions.

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    5. More on JOINs

    Learn about various kinds of JOINs to best suit your needs.

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    6. Subqueries

    Queries within queries? That's right! Discover how to build and use subqueries.

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    7. Set operations

    Combine query results using set operations like UNION, INTERSECT or MINUS.

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    8. Quiz

    Check your SQL skills.

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