I need a help with this function

Hello Guys.
I made a function that must return me the difference between two dates and return me it formated. But sometimes when I have only minutes in their difference it is not working, only returning me 0. Could you take a look where should I improve it? Thanks

CREATE FUNCTION DIFHOURS (@Dt1 Datetime, @Dt2 DateTime)  
RETURNS char(10) AS  
BEGIN
  DECLARE @HOUR CHAR(10)
 
  IF DATEDIFF(SECOND, @Dt1, @Dt2) / 3600 = 0
     BEGIN
       SET @HOUR = 0
     END
  ELSE
     BEGIN
       SET @HOUR =  CAST(DATEDIFF(SECOND, @Dt1, @Dt2) / 3600 AS VARCHAR(2)) + ':' +
                    RIGHT('0' + CAST(DATEDIFF(SECOND, @Dt1, @Dt2) %3600 / 60 AS VARCHAR(2)), 2) + ':' +
                    RIGHT('0' + CAST(DATEDIFF(SECOND, @Dt1, @Dt2) % 60 AS VARCHAR(2)), 2)
     END
 
  RETURN @HOUR
END
LVL 1
hidrauAsked:
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Guy Hengel [angelIII / a3]Billing EngineerCommented:

CREATE FUNCTION DIFHOURS (@Dt1 Datetime, @Dt2 DateTime)  
RETURNS char(10) AS  
BEGIN
  DECLARE @HOUR CHAR(10)
 
  IF DATEDIFF(SECOND, @Dt1, @Dt2) / 3600 = 0
     BEGIN
       SET @HOUR = '0:00:00'
     END
  ELSE
     BEGIN
       SET @HOUR =  CAST(DATEDIFF(SECOND, @Dt1, @Dt2) / 3600 AS VARCHAR(2)) + ':' +
                    RIGHT('0' + CAST(DATEDIFF(SECOND, @Dt1, @Dt2) %3600 / 60 AS VARCHAR(2)), 2) + ':' +
                    RIGHT('0' + CAST(DATEDIFF(SECOND, @Dt1, @Dt2) % 60 AS VARCHAR(2)), 2)
     END
 
  RETURN @HOUR
END
0

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hidrauAuthor Commented:
angelIII I think you didn't understand, when the difference is only in minutes it is returning me none.

If I have this two date at this format: DD/MM/YYYY

1 date: 01/01/2006 15:35:00  
2 date: 01/01/2006 15:36:00

the difference between is 2 minutes and the function is returning me 0
0
hidrauAuthor Commented:
I got the error on it
It was at this line IF DATEDIFF(SECOND, @Dt1, @Dt2) / 3600 = 0
It must be this way IF DATEDIFF(SECOND, @Dt1, @Dt2) / 60 = 0

Even though Thanks
0
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