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  1. #1
    Join Date
    Apr 2014

    Question Unanswered: Calculate a sum field

    Hey.. I have a database about car's fuel and anyway..i want to create a query that calculates the km in a month, the liter_quantity of fuel in a month a total_norme=liter_quantity/km_in_month.
    For liter quantity, i make a sum of that field, for a specified month.
    for km_in_month, i make Km_end_Month - Km_Begin_Month.
    but when i want to find the total_norme, it doesn't work...can you help me please, what should i put in the Norme field as expression ?
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  2. #2
    Join Date
    Mar 2009
    Provided Answers: 15
    Please post the name(s) of the table(s), names and data types of the columns involved in the query.
    Have a nice day!

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