In this course you will be introduced to two methods of writing SQL queries that retrieve data from two or more tables. Since one of the functions of a database is to store data in an organized format, many databases are made up of multiple tables. Often, the data output required from the database is made up of data from more than one table. For example, the data that populates a student transcript might come from the Student, Course, and Section tables. While the Student table may provide the student’s name, the name and number of the course might come from the Course table and the specific grade for that course may come from yet another table. While writing SQL queries in SQLiteStudio, you'll learn the SQL syntax required to join tables together as you develop an understanding of how the relationships among tables come into play.
Retrieve Data with Multiple-Table SQL Queries
Instructor: Judy Richardson
4,385 already enrolled
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(95 reviews)
Recommended experience
What you'll learn
Explain the need for multiple-table queries in data retrieval.
Generate successful SQL multiple-table queries for data retrieval.
Recognize relationships among tables in a relational database.
Skills you'll practice
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About this Guided Project
Learn step-by-step
In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:
Joining Two Tables with WHERE
Understanding Table Relationships
Joining Three or More Tables
Adding Selection into the WHERE clause
The INNER JOIN
The LEFT JOIN
Recommended experience
Learners who are targeting careers in programming, web development, or data analysis.
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Practice new skills by completing job-related tasks.
Expert guidance
Follow along with pre-recorded videos from experts using a unique side-by-side interface.
No downloads or installation required
Access the tools and resources you need in a pre-configured cloud workspace.
Available only on desktop
This Guided Project is designed for laptops or desktop computers with a reliable Internet connection, not mobile devices.
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Reviewed on Jul 8, 2020
Instructor presented material in a down to earth fashion which made the material easy to understand.
Reviewed on Apr 5, 2021
the work space is too busy, it is difficult to read or follow the session without interrupting the practical lesson and stopping the video.
Reviewed on Sep 16, 2020
Nice and to the point explanations of the joins mentioned. Good for beginners. Wish they also added Self-Join as well.
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