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Joining Data in SQL

BeginnerSkill Level
4.8+
5,668 reviews
Updated 05/2025
Level up your SQL knowledge and learn to join tables together, apply relational set theory, and work with subqueries.
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SQLData Manipulation4 hours14 videos47 Exercises3,950 XP227,912Statement of Accomplishment

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Course Description

Joining data is an essential skill in data analysis, enabling you to draw information from separate tables together into a single, meaningful set of results. In this comprehensive course on joining data, you'll delve into the intricacies of table joins and relational set theory, learning how to optimize your queries for efficient data retrieval.

Understand Data Joining Fundamentals

You will learn how to work with multiple tables in SQL by navigating and extracting data from various tables within a SQL database using various join types, including inner joins, outer joins, and cross joins. With practice, you'll gain the knowledge of how to select the appropriate join method.

Explore Advanced Data Manipulation Techniques

Next up, you'll explore set theory principles such as unions, intersects, and except clauses, as well as discover the power of nested queries in SQL. Every step is accompanied by exercises and opportunities to apply the theory and grow your confidence in SQL.

Prerequisites

Intermediate SQL
1

Introducing Inner Joins

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2

Outer Joins, Cross Joins and Self Joins

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3

Set Theory for SQL Joins

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4

Subqueries

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Joining Data in SQL
Course
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*4.8
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  • Andres
    33 minutes

  • Maung
    40 minutes

  • Silas
    about 2 hours

  • Matt
    about 5 hours

  • Terry
    7 minutes

  • Tom
    about 2 hours

Andres

Maung

Silas

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