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Having problems with UDF that uses If statements and while loop

Mach1pro
Mach1pro asked
on
830 Views
Last Modified: 2012-08-13
I just need some guru to fix my syntax. I spent over an hour trying to find the problem, but it just isn't obvious to me.

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CREATE   FUNCTION dbo.DaysOff
  (
     
      @dtStartDate smallDatetime,
      @dtEndDate smalldatetime,
      @strStartTime varchar(8),
      @strEndTime varchar(8)
   
      
  )
RETURNS decimal
AS
begin
DECLARE @dtStartTime DateTime,
      @dtEndTime DateTime,
      @sgHours decimal

If DateDiff(day,@dtStartDate , @dtEndDate) > 1
       While @dtStartDate >= @dtEndDate
            Begin
                  If DatePart(Weekday,@dtStartDate) > 1 and DatePart(Weekday,@dtStartDate) < 7                              
                  Set @sgHours = @sghours + 8            
                  set @dtStartDate = DateAdd(day,1,@dtStartDate)                  
            end
Else
      If Isdate(@strStartTime)
      
            Set @dtStartTime = Convert(datetime,@strStarttime,108)
            If IsDate(@strEndTime)
                  
                  Set @dtEndTime = Convert(DateTime,@strEndTime,108)
                  Set @sgHours = dbo.MinutesWorked(@dtstartDate, @dtStartTime, @dtEndDate, @dtEndTime) /60
                  
            Else
                  Set @sgHours = 8
      
      Else
            Set @sgHours = 8

return @sgHours

end
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