User Defined function Return day of week

Create FUNCTION DayOfWeek
(
@Date as Datetime
)

Returns varchar(30)
AS
BEGIN
Declare @Return varchar(30)

select @Return=case datepart(dw,@Date)
When 7 Then 'Saturday'
When 1 Then 'Sunday'
When 2 Then 'Monday'
When 3 Then 'Tuesday'
When 4 Then 'Wednesday'
When 5 Then 'Thrusday'
When 6 Then 'Friday'
End
return @Return
END
GO

Alternate
select datename(dw,getdate())

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