Conditional summation in Crystal Reports

问题

I have some rows with a price and quantity and I'm looking to sum only the prices where the quantity > 5

itemname        price         Qty
----------------------------------
apple            20            2
watermelon       10            3
bango            22            6
hashesh           3            9

Given the above data, the sum I'd like to get is 22+3=25. How do I write a formula to do this?

回答1:

create a formula field named calculation to the side of quantity and enter the following text:

// {@calculation}
If quantity>5 then price
else 0

now take the sum of {@calculation}. suppress both detail in the report.

Take the sum and place in the footer of the required column.

来源：https://stackoverflow.com/questions/22483434/conditional-summation-in-crystal-reports