Duration formula without working hours?

[ronin316]

Any help would be appreciated

I have the following formula:

( if( [start_time] = null, [duration] , if( [end_time] = null , [duration] , if( [end_time] > [start_time] , ([end_time] - [start_time] + 30 ) /60 , if( [start_time] > [end_time] , ( ( (Time( 23 , 59 , 59) - [Start_time] ) + 31) / 60 + (Hour( [end_time]) X 60 ) + Minute( [End_time] , 0 ) ) ) ) ) + ( ( ( [end_date] - [start_date] ) X 24 ) X 60 )

This determines the number of minutes between the fields. I now need to minus the non-working minutes that may fall in the range. This is a form formula and I am not able to create queries inside this application. The working hours are 9-5 Monday to Friday.

Any help would be appreciated, I am having a brain burp

Thanks

 

[dhookom]

You can't ever use "[any expression] = Null" since Null is unknown and you can't compare unknown to anything. ALso, there is no If() in Access.

You can possibly use something like [blue]IIf(IsNull([duration]),[duration],...)[/blue].

Since you seem to have a fairly complex expression that depends on 5 values, I would create a user-defined-function to perform the logic and calculation. This would be much easier to write and maintain than a huge, complex expression.

Duane MS Access MVP
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