Microsoft SQL Server Development for Everyone - Scalar Valued Functions

What is the primary purpose of using functions in SQL?

• To replace SQL queries

• To store data permanently

• To execute complex code with simple commands

• To create databases

Which function in SQL does not require any parameters?

• MAX

• MIN

• GETDATE

• SUM

What type of value does the GETDATE function return?

• String

• Integer

• Float

• DateTime

Where can you find a list of system functions in SQL?

• In the database's tables

• In the programmability folder

• In the SQL server logs

• In the user settings

What is the first step in creating a scalar valued function?

• Create the function template

• Write the SQL query

• Define the return type

• Add parameters

What is the purpose of declaring a variable in a scalar valued function?

• To hold the return value temporarily

• To define the function's parameters

• To execute the SQL query

• To store the function's name

What parameter type is used to retrieve a course title by ID?

• Float

• String

• DateTime

• Integer

Why is it important to match the return variable type with the function's return type?

• To ensure the function executes faster

• To prevent data truncation

• To allow multiple return values

• To simplify the SQL query

What should you do if a function needs modification after creation?

• Use the ALTER command

• Delete and recreate the function

• Change the database settings

• Restart the SQL server

What happens if you pass an invalid ID to the course title function?

• It returns a null value

• It crashes the SQL server

• It returns an error

• It returns the first course title