TSQL Function passing a date

Hi Experts,

I have this function:
ALTER FUNCTION [dbo].[fncUtlDateEnding]
(@IncomingDate as datetime, @DatePart as nvarchar(10))
RETURNS datetime
	DECLARE @OutgoingDate as datetime
	If @DatePart = 'yyyy' 
		SET @OutgoingDate =DATEADD(yyyy, 1 + DATEDIFF(yyyy, 0, @IncomingDate), 0) - 1

	If  @DatePart = 'mm' 
		SET @OutgoingDate = DATEADD(mm, 1 + DATEDIFF(mm, 0, @IncomingDate), 0) - 1

	RETURN @OutgoingDate

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And I have a table that has the column that I would like to change the date to be the last day of the month.


I would like to know how to fun the function to get what I am looking for?

Please help and thanks.
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Vitor MontalvãoMSSQL Senior EngineerCommented:
UPDATE TableName
SET Date6 = fncUtlDateEnding(Date6,'mm')

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NOTE: Test this command in a testing/development environment before running it in Production.

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Deepak ChauhanSQL Server DBACommented:
You can also check the value by selecting before update. If it is giving the desired result what you are looking for the update the table.

Select Date6, dbo.fncUtlDateEnding(Date6,'mm') from TableName

If you are good with result then update.

UPDATE TableName
SET Date6 = dbo.fncUtlDateEnding(Date6,'mm')
Amour22015Author Commented:
Great thanks for helping.  DeepakChauhan  from what I can see of your name? are you from Punjabi India?
Deepak ChauhanSQL Server DBACommented:
Good catch, Yes i am from India Delhi.
Amour22015Author Commented:
ਅਧਿਕਤਮ - Sat Shri Akal ji. - Yes the Deepak is what really gave location away,
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