What i am aattempting to do is create an aggregate function that multiplies together all of the results from a query. For example, if the query contained 1,2 and 5, the aggregate function would return 10. It would not seem to be difficult to do this, but I am a new Access user, and am having trouble with these aggregate functions. Please help me if you know how.

Need a little more info on what your trying to accomplish. if you're wanting to multiply all the values from a query against each other, you're probably gonna have to write some sort of custom function that loops through the results.

I was thinking that was what would be necassary.

I have a table of monthly return data for an investment. What the function will do is multiply together a compound return for the period in question. If i knew the VBA for the sum function, it would be a simple matter of switching the +'s to *'s.

Below would be a specific example:

Date Return
Oct 05 1.1%
Nov 05 1.3%
Dec 05 2.5%

If I specified a three month time period through a form (i can do this part), I might get data like above. What I would wantr to see is the compound return, which would be 1.011(1+the return value)times 1.013 times 1.025, or 1.0497 as a totak number. This data item indicates a that there is a 4.97% return over that time period. Again, so easy in Excel, so hard in Access. Thanks for helping out.

Can you write out the formula that you would have used in Excel that you want to duplicate in Access?

Thanks,


mmcdonal