need help extending business day module

[wilkob]

Hi all,

I am using the a transport delivery performance query and module giving me the working / business days

This module I got of microsoft.com and included the holidays

I would like to extend below script to use only then holiday when it is linked to the country where the goods are send from or receives the goods

Example :
7-6-2012 is national holiday in Germany
When I send on 4-6-2012 a shipment from The Netherlands which arrives in France on 12-6-2012 this holiday should not be considered
When I send on 4-6-2012 a shipment from The Netherlands to Germany which arrives on 12-6-2012 the holiday should be considered

In the calculation of the working days the holiday in sending and/or receiving days should only be deducted once. So if holiday exisit in 2 countries it should only deduct 1 day

I have a table which holds all national holidays of 2012 per country

If I need to run this via several queries to do it step by step this is no problem

Module:
Option Compare Database
Option Explicit

Public Function Weekdays(ByRef startDate As Date, _
ByRef endDate As Date _
) As Integer
' Returns the number of weekdays in the period from startDate
' to endDate inclusive. Returns -1 if an error occurs.
' If your weekend days do not include Saturday and Sunday and
' do not total two per week in number, this function will
' require modification.
On Error GoTo Weekdays_Error

' The number of weekend days per week.
Const ncNumberOfWeekendDays As Integer = 2

' The number of days inclusive.
Dim varDays As Variant

' The number of weekend days.
Dim varWeekendDays As Variant

' Temporary storage for datetime.
Dim dtmX As Date

' If the end date is earlier, swap the dates.
If endDate < startDate Then
dtmX = startDate
startDate = endDate
endDate = dtmX
End If

' Calculate the number of days inclusive (+ 1 is to add back startDate).
varDays = DateDiff(Interval:="d", _
date1:=startDate, _
date2:=endDate) + 0

' Calculate the number of weekend days.
varWeekendDays = (DateDiff(Interval:="ww", _
date1:=startDate, _
date2:=endDate) _
* ncNumberOfWeekendDays) _
+ IIf(DatePart(Interval:="w", _
Date:=startDate) = vbSunday, 1, 0) _
+ IIf(DatePart(Interval:="w", _
Date:=endDate) = vbSaturday, 1, 0)

' Calculate the number of weekdays.
Weekdays = (varDays - varWeekendDays)

Weekdays_Exit:
Exit Function

Weekdays_Error:
Weekdays = -1
MsgBox "Error " & Err.Number & ": " & Err.Description, _
vbCritical, "Weekdays"
Resume Weekdays_Exit
End Function

Public Function Workdays(ByRef startDate As Date, _
ByRef endDate As Date, _
Optional ByRef strHolidays As String = "Holidays" _
) As Integer
' Returns the number of workdays between startDate
' and endDate inclusive. Workdays excludes weekends and
' holidays. Optionally, pass this function the name of a table
' or query as the third argument. If you don't the default
' is "Holidays".
On Error GoTo Workdays_Error
Dim nWeekdays As Integer
Dim nHolidays As Integer
Dim strWhere As String

' DateValue returns the date part only.
startDate = DateValue(startDate)
endDate = DateValue(endDate)

nWeekdays = Weekdays(startDate, endDate)
If nWeekdays = -1 Then
Workdays = -1
GoTo Workdays_Exit
End If

strWhere = "[Holiday] >= #" & startDate _
& "# AND [Holiday] <= #" & endDate & "#"

' Count the number of holidays.
nHolidays = DCount(Expr:="[Holiday]", _
Domain:=strHolidays, _
Criteria:=strWhere)

Workdays = nWeekdays - nHolidays

Workdays_Exit:
Exit Function

Workdays_Error:
Workdays = -1
MsgBox "Error " & Err.Number & ": " & Err.Description, _
vbCritical, "Workdays"
Resume Workdays_Exit

End Function