Hi, Aron.
If you have a table listing the monthly, weekly and daily rates for the
calculation, then try the following:
SELECT [Date in], [Date Out],
DateAdd("m", NumMos, [Date in]) AS WkFrDate,
DateAdd("ww", NumWks, WkFrDate) AS DayFrDate,
DateDiff("m", [Date in], [Date Out]) AS Mos,
IIF((DateAdd("m", Mos, [Date in]) <= [Date Out]), Mos, (Mos - 1)) AS
NumMos,
DateDiff("w", WkFrDate, [Date Out]) AS NumWks,
DateDiff("d", DayFrDate, [Date Out]) AS NumDays,
NumMos *
(SELECT Rate
FROM tblRates
WHERE (Period = 'Monthly')) +
NumWks *
(SELECT Rate
FROM tblRates
WHERE (Period = 'Weekly')) +
NumDays *
(SELECT Rate
FROM tblRates
WHERE (Period = 'Daily')) AS Cost
FROM tblRentals;
.... where Rate is a field of Currency data type, Period is a text field for
the time frame for each rate, tblRates is the name of the table listing the
rates, and tblRentals is the name of the table storing the dates and other
information for each rental.
HTH.
Gunny
See
http://www.QBuilt.com for all your database needs.
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