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Actual exam question for Microsoft's DP-800 exam Question #: 29 Topic #: 1
You have an Azure SQL database. You need to create a scalar user-defined function (UDF) that returns the number of whole years between an input parameter named 0orderDate and the current date/time as a single positive integer. The function must be created in Azure SQL Database. You write the following code. What should you insert at line 05?
The correct answer is D because the scalar UDF must return the number of whole years from the input @OrderDate to the current date/time as a single positive integer . The correct DATEDIFF order is: DATEDIFF(year, @OrderDate, GETDATE()) Microsoft documents that DATEDIFF(datepart, startdate, enddate) returns the count of specified datepart boundaries crossed between the start and end values. Since @OrderDate is the earlier date and GETDATE() is the later date, this ordering returns a positive result for past order dates. The other choices are incorrect: * A reverses the arguments and would return a negative value for a past order date. * B is missing RETURN, and converting month difference to years by dividing by 12 is not the direct whole-year expression the question asks for. * C subtracts year parts only, which can be off around anniversary boundaries because it ignores whether the full year has actually elapsed. So the correct insertion at line 05 is: RETURN DATEDIFF(year, @OrderDate, GETDATE());
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