How to 'group by' using variables in 4gl

Question

Is there a way to group records by a field within a table within a 4gl query?

My code.

  define variable v-invoice     as inte    no-undo.
define variabl         


        

Answer 1

Yes, of course you can, very basic:

DEFINE VARIABLE v-sell-price AS INTEGER NO-UNDO.
DEFINE VARIABLE v-cost-price AS INTEGER NO-UNDO.

FOR EACH order BREAK BY order.invoice:

    /* Sum the prices */
    ASSIGN 
        v-sell-price = v-sell-price + Order.sell-price.
        v-cost-price = v-cost-price + Order.cost-price. 

    /* On the last order matching this order display and reset sums */
    IF LAST-OF(order.invoice) THEN DO:

        DISPLAY Order.invoice v-sell-price v-cost-price.
        ASSIGN 
            v-sell-price = 0
            v-cost-price = 0.
    END.
END.