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
正确答案:B
答案解析:有
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