i have two tables, one is cost calculator and the other one is Parameter. i have the price in Dollar currency in the Cost calculator table and the Usd to euro transfere rate in the parameter table.
so i want to make the calculation between these two which is dividing dollar by the rate using expressions, to get the result in my cost calculator table in an other column.
so basicly my question is how to refer to a column in an other table and use it in a mathematical formula
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