You have an Azure SQL database that contains a table named Sales.

Function return type → RETURNS INT

Calculation → DATEDIFF(day, @OrderDate, GETDATE())

Comprehensive and Detailed Explanation with all Developing AI-Enabled Database Solutions documents : =

The first correct selection is RETURNS INT because the requirement is to create a scalar UDF that returns a single integer representing the number of days since the order date. Microsoft documents that scalar user-defined functions return a single scalar value, and DATEDIFF returns an int value.

The second correct selection is:

DATEDIFF(day, @OrderDate, GETDATE())

Microsoft defines DATEDIFF(datepart, startdate, enddate) as returning the number of specified datepart boundaries crossed between two dates. Therefore, placing @OrderDate as the start date and GETDATE() as the end date returns the number of elapsed day boundaries from the order date to the current date and time.

GETDATE() is valid inside a Transact-SQL UDF. Microsoft explicitly lists GETDATE among the nondeterministic built-in functions that can be used in T-SQL user-defined functions . Its nondeterministic nature means the result changes over time, but it does not prevent creation of this scalar UDF.

The completed code is:

CREATE FUNCTION dbo.ufn_DaysSinceOrder

(

@OrderDate datetime2(0)

)

RETURNS INT

BEGIN

DECLARE @Days int;

SELECT @Days =

DATEDIFF(day, @OrderDate, GETDATE());

RETURN @Days;

END;

GO

So the drag-and-drop answers are:

First target: RETURNS INT

Second target: DATEDIFF(day, @OrderDate, GETDATE())