Hi
i have a table of invoices where i have 2 columns :
- an numeric columns where i have the quantity : Quantity
- an numeric columns where i have the unit cost : Unit cost
and i want to have the sum of quantity * Unit cost , over a perimeter of invoices
this : nl("sum","table invoice", "Quantity"* "Unit cost",....) don't work
and i can't do this :
nl("sum","table invoice", "Quantity",....) * nl("sum","table invoice", "Unit cost",....)
and the perimeter of invoice is too big to extract all invoice and done nf( invoice_line, "Quantity") * nf(invoice_line, "Unit cost") and then sum all results
thanks for your help
best regards
