freeskillacademy
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Lesson 28 is added to the SQL tutorial.
In this lesson, you will learn how to create a duplicate copy of an existing database table using SQL.
https://freeskillacademy.com/tutorials/sql/cloning-tables
Lesson 29 is added to the SQL tutorial.
In this lesson, you will learn how to return a specific value based on a list of conditions using SQL:
https://freeskillacademy.com/tutorials/sql/case
Lesson 30 is added to the SQL tutorial.
In this lesson, you will learn how to restrict columns to contain unique values using SQL:
https://freeskillacademy.com/tutorials/sql/unique
Lesson 31 is added to the SQL tutorial.
In this lesson, you will learn how to distribute data over several tables:
https://freeskillacademy.com/tutorials/sql/relationships
Lesson 32 is added to the SQL tutorial.
In this lesson, you will learn how to distribute data into several tables correctly so you can link them together again when you need to retrieve them:
https://freeskillacademy.com/tutorials/sql/relationships-types