单选题Which of the following is a typical data warehouse query?（）AWhat is this customers address?BDoes this customer have any unpaid bills?CWhat is the balance in this customers account?DWhat are the total sales for each of the last 6 months?
单选题
Which of the following is a typical data warehouse query?（）
A
What is this customers address?
B
Does this customer have any unpaid bills?
C
What is the balance in this customers account?
D
What are the total sales for each of the last 6 months?
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