フリー問題

問題文

For each customer, an analyst wants the total sales that customer has ever made, and this value must stay the same even when the view is broken down by Order Date. Which expression fits?

選択肢

1. { INCLUDE [Customer] : SUM([Sales]) }
2. SUM([Sales]) as a plain aggregate
3. A Running Total table calculation of Sales
4. { FIXED [Customer] : SUM([Sales]) }