i think the best way would be to do this is directly through sql in one query. 
you can build a list with the ids of all the products the customer has 
selected, then in 1 query...

select surcharge from products
where productid in(<cfqueryparam value="theListOfProductIds#" list="yes" 
cfsqltype="cf_sql_varchar">)
and surcharge <> ""

i am not sure but there must be a function in sql that adds up all the values 
in a column - maybe someone else can suggest it - but this sql statement then 
saves all the time that a loop would take and would just return the results 
where those products you have entered have a surcharge, then it is just a 
matter of adding it up. but as i said there must be a sql function you can use 
within this same function to do that


> Hi
> 
> I am building a shopping cart which calculates shipping charges, some 
> products also have an additional surcharge. Which is where i am stuck,
> 
> 
> The additional surcharge is stored within the product table.
> 
> What i thought was to loop through the products in the cart,  query 
> the products database to get the surcharge or surcharges, loop through 
> the query results for the individual surcharges. If this is the 
> correct way, how do i then add the surcharges up and account for when 
> the loop finishes.
> 
> Jason
> 


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