问题描述：
英语翻译
这个一道计算机试题。
View the Exhibit; e xamine the structure of the PROMOTIONS table.
Each promotion has a duration of at least seven days .
Your manager has asked you to generate a report,which provides the weekly cost for each promotion done to l date.
Which query would achieve the required result?
A......
B......
C......
D......
请问，要求我算的是weekly cost呢？还是一天的cost(因为最后的1 date
这个一道计算机试题。
View the Exhibit; e xamine the structure of the PROMOTIONS table.
Each promotion has a duration of at least seven days .
Your manager has asked you to generate a report,which provides the weekly cost for each promotion done to l date.
Which query would achieve the required result?
A......
B......
C......
D......
请问，要求我算的是weekly cost呢？还是一天的cost(因为最后的1 date
问题解答：
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