2.3. RIGHT JOIN / FULL OUTER JOIN

Try these first

1. 1.

   What does RIGHT JOIN accomplish?

   Hint

   Think about which table is prioritized in a RIGHT JOIN.

2. 2.

   Write a SQL statement using FULL OUTER JOIN to find all customers and their orders.

   Hint

   Remember it combines all records from both tables.

3. 3.

   What type of records does RIGHT JOIN return?

   • Only from the left table
   • Only from the right table
   • Both tables with priority on the right

   Hint

   Focus on which table data is prioritized.

4. 4.

   FULL OUTER JOIN includes records from which tables?

   • True
   • False

   Hint

   Recollect the definition of FULL OUTER JOIN.

5. 5.

   Given two tables: employees and departments, write a SQL query to find employees even if they are not assigned to any department. Include the department name if present.

   Hint

   Think about focusing on employee data and what happens if they belong to no department.

6. 6.

   Create a query using FULL OUTER JOIN that lists all products and sales, but marks products not sold with NULL.

   Hint

   Focus on ensuring every product appears even if it has not been sold.