Basic Course
SQL JOINs
Review and deepen your knowledge of SQL JOINs with 93 exercises. Practice common and less common ways of getting data from multiple tables.
4.83
155,557 learners enrolled
Free trial Yes
Certificate of completion Yes
Time to complete 10 h
Coding challenges 93
Skills you will gain
- JOINing and selecting data from more than one table
- JOINIng many tables in a single query
- The use cases of LEFT JOIN, RIGHT JOIN, and FULL JOIN
- How to correctly filter data with different kinds of JOINs
- How to join a given table with itself
- How to join tables on non-key columns
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Description
JOINs are one of the most fundamental and commonly used features of the SQL language. It's safe to say that at least basic knowledge of querying data from more than one table is an absolute must for every SQL user.
This course covers all important types of SQL JOINs that are widely used by SQL programmers to query databases on a daily basis.
This course is intended for users who have very basic experience with SQL. We assume you know how to write simple queries to select data from a single table.
What Do You Need to Take This Course?
Just a web browser and an Internet connection.
This Course Will Teach You:
- JOINing and selecting data from more than one table
- JOINIng many tables in a single query
- The use cases of LEFT JOIN, RIGHT JOIN, and FULL JOIN
- How to correctly filter data with different kinds of JOINs
- How to join a given table with itself
- How to join tables on non-key columns
You'll also delve into the interesting topic of non-equi JOINs.
Who Should Take This Course?
- Analysts who use relational databases
- Students taking courses in relational databases
- Beginning programmers interested in SQL
- Business database users who want to improve their querying skills
- Anyone who wants to improve or practice their knowledge of SQL JOINs
Table of contents
Course progress 0%
Exercises completed 0/93
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Review the most common types of JOINs. Practice JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN and others.
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Refine your joining skills. Exercise joining more than two tables in one SQL query.
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Learn how to join SQL table with itself.
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Practice joins with less common conditions: non-equi JOINs and joins between non-key columns.
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Check your knowledge in the challenge.
Get the Certificate of Competency in SQL
This certificate will confirm your practical SQL problem-solving skills