试题详情
- 单项选择题A subquery can be used to（）.
A、Create groups of data
B、Sort data in a specific order
C、Convert data to a different format
D、Retrieve data based on an unknown condition
- D
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A、Create groups of data
B、Sort data in a specific order
C、Convert data to a different format
D、Retrieve data based on an unknown condition
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