Complex arithmetic calculations in SQL

Hi everyone,

I have a situation where I have to get the result in SQL of somehow complex calculation which we were previously doing it in Ms Excel. Attached is the file to see the table structure and data. Now by keeping in mind the structure of the table, kindly help how to solve the following formula for "UK" where "LocationID" is different but "LocationSubID" are same.

Average = (((Itemsold_month-Itemsold_day)*Itemsold_total)+((Itemsold_month-Itemsold_day)*Itemsold_total))/(Itemsold_month-Itemsold_day)

This formula will be used to calculate for both entries of "UK" but their will be a single value, say "Average"

Please guide. If need any further clarification then please let me know.

P.S. This formula can be simplified but need to calculate the result using above mentioned formula only

Thanks.
Sample-table.xlsx
hennanra3Asked:
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Randy PetersonCommented:
So what happens when you have 3 different locations in the same country?  What you are trying to do is to get the average ((Itemsold_month-Itemsold_day)*Itemsold_total) for each country correct?  

Your formula is getting (from your table) Average = (((Itemsold_month-Itemsold_day)*Itemsold_total)+((Itemsold_month-Itemsold_day)*Itemsold_total))/(Itemsold_month-Itemsold_day)

But you are getting different values in your formula from different rows in your table?  Just trying to get the exact way you are trying to calculate.  SQL is very powerful doing aggregations and formulas like this, I just want to get it right.
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Randy PetersonCommented:
Basically, if you could provide one concrete example from your table of your calculation, I should be able to generate the query.
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hennanra3Author Commented:
Yes agree SQL is indeed very powerful in doing aggregations. Used "SUM" and their result in query to get the result.
Thanks.
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