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單項(xiàng)選擇題

Examine the following command that is executed for the TRANSPORT table in the SH schema:

Which statement describes the significance of this command?()

A. It collects statistics into the pending area in the data dictionary
B. It creates a virtual hidden column in the CUSTOMERS_OBE table
C. It collects statistics with AUTO_SAMPLE_SIZE for ESTIMATE_PERCENT
D. It creates a histogram to hold skewed information about the data in the columns

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