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Oracle认证考试

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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
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