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Old August 1st, 2006, 07:37 AM
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Default How to find a date range between another date rang

I am in the process of trying to find out whether a date range falls between another date range and need help.

I have a table that lists the following:

Service Date End Date + 30 days - 30 days

06/04/04 9/2/04 7/4/04 5/4/04
9/25/04 12/24/04 7/4/04 5/4/04
9/29/03 10/29/06 2/2/04 12/4/03

And so on. I wanted to run a query to find out whether the range of (Service Date And End Date) fell within the range of (+30 days And - 30 Days).

Can someone please help.

Thanks
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Old August 3rd, 2006, 08:04 AM
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This will work. I chose to call the columns

"Start" "End" "Minus30" and "Plus30"

1. Make a query in design view
2. Save it
3. Double click each of the four fields to a column in the query design grid to add them to the query.
4. In the 'field' cell of the next column, type the following expression:

Expr1: IIf(([Start]>=[Minus30]) And ([End]<=[Plus30]),"Within the range","Not within the range")

Note the unusual spelling of "If" - it has two i's then one f.

Second term is what's returned if the expression is true (I chose a text) and the third term is what's returned if the expression is false i.e. if the service dates are not within the other range.
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Old August 3rd, 2006, 09:50 AM
pjm pjm is offline
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Unless I'm missing something, you should be able to just use the expression:

([Start] between [Minus30] and [Plus30]) and ([End] between [Minus30] and [Plus30])

-Phil-


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